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green · cool

#ceffd1

a pale, electric green · cool · closest name: Aqua Marine

Token name suggestion: Frost Basil

RGB
206, 255, 209
HSL
124°, 100%, 90%
CMYK
19, 0, 18, 0
Luminance
0.8925

#ceffd1 is a pale electric green, 124° on the wheel and 64/100 on the cool side. Put black text on it (18.85:1). As text it scores 1.11:1 on white — use #008708 instead. Nearest name is Aqua Marine, nearest Tailwind family is green.

hsl(124 100% 90%)rgb(206 255 209)Base step 200AAA inkCool

At a glance

Every number on this page in one read: what #ceffd1 is made of, how bright it looks, and which way it leans.

Hex
#ceffd1
Hue
124°
green
Saturation
100%
electric
Lightness
90%
pale
Brightness
100%
HSV value
Perceived
93%
weighted brightness
Luminance
0.8925
WCAG relative
Temperature
Cool
64/100 cool
Color family
Green
Tone
Electric
Best ink
Black
18.85:1
Closest name
Aqua Marine
ΔE2000 10.8
Chroma
29.4
LCH, 0–130ish
OKLCH L
0.954
perceptual lightness
Tailwind
green
500 · ΔE 21.7
Web-safe
#CCFFCC
nearest of 216
Where it sits
Hue124° of 360°
Saturation100%
Lightness90%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #ceffd1.

Temperature
Warm ← → Cool64% cool

Reads cool. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Luminance by channel
Red15%
Green80%
Blue5%

Green carries most of what the eye calls brightness — that is why WCAG weights it 0.7152.

Every format

HEX#ceffd1
HEX (8-digit)#ceffd1ff
RGBrgb(206, 255, 209)
RGBArgba(206, 255, 209, 1)
HSLhsl(124, 100%, 90%)
HSV / HSBhsv(124, 19%, 100%)
HWBhwb(124 81% 0%)
CMYKcmyk(19%, 0%, 18%, 0%)
LABlab(95.7 -24.1 16.9)
LCHlch(95.7 29.4 144.9)
OKLCHoklch(0.954 0.079 146.5)
XYZ (D65)xyz(72.72, 89.24, 73.70)
Decimal13565905
Display P3color(display-p3 0.808 1.000 0.820)
Web-safe#CCFFCC

Copy-ready code

every platformclick to select
/* CSS */
color: #ceffd1;
background-color: #ceffd1;
/* CSS custom property */
--brand: #ceffd1;
/* Tailwind (arbitrary) */
class="text-[#ceffd1] bg-[#ceffd1]"
/* SCSS */
$brand: #ceffd1;
/* SwiftUI */
Color(red: 0.808, green: 1.000, blue: 0.820)
/* UIKit */
UIColor(red: 0.808, green: 1.000, blue: 0.820, alpha: 1)
/* Android XML */
<color name="brand">#CEFFD1</color>
/* Android Compose */
Color(0xFFCEFFD1)
/* Flutter */
Color(0xFFCEFFD1)
/* Python / OpenCV (BGR) */
(209, 255, 206)
/* Python / PIL (RGB) */
(206, 255, 209)
/* Java AWT */
new Color(206, 255, 209)
/* .NET */
Color.FromArgb(255, 206, 255, 209)
/* OpenGL / Unity (0–1) */
(0.8078f, 1.0000f, 0.8196f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{206,255,209}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #ceffd1 85%, white);
border-color: color-mix(in oklab, #ceffd1 40%, transparent);
/* theme-aware in one line */
color: light-dark(#008008, #D3EED4);
/* relative colour syntax */
--hover: hsl(from #ceffd1 h s calc(l - 7));

Design tokens

The same ramp in the four formats a team actually needs. Paste one and the whole palette lands with it.

css custom propertiesclick to select
:root {
  --brand-50: #F1FEF2;
  --brand-100: #E3FCE5;
  --brand-200: #ceffd1;
  --brand-300: #8FFF96;
  --brand-400: #57FF61;
  --brand-500: #1FFF2C;
  --brand-600: #00F50F;
  --brand-700: #00CC0D;
  --brand-800: #00A30A;
  --brand-900: #05760C;
  --brand-950: #034907;
  --brand: #ceffd1;
  --brand-ink: #000000;
  --brand-surface: #F4FAF5;
  --brand-border: #C0EDC3;
  --brand-hover: #AAFFB0;
  --brand-pressed: #87FF8E;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142415;
    --brand-ink: #D3EED4;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F1FEF2',
        100: '#E3FCE5',
        200: '#ceffd1',
        300: '#8FFF96',
        400: '#57FF61',
        500: '#1FFF2C',
        600: '#00F50F',
        700: '#00CC0D',
        800: '#00A30A',
        900: '#05760C',
        950: '#034907',
        DEFAULT: '#ceffd1',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F1FEF2,
  '100': #E3FCE5,
  '200': #ceffd1,
  '300': #8FFF96,
  '400': #57FF61,
  '500': #1FFF2C,
  '600': #00F50F,
  '700': #00CC0D,
  '800': #00A30A,
  '900': #05760C,
  '950': #034907,
);
$brand-base: #ceffd1;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F1FEF2", "$type": "color" },
      "100": { "$value": "#E3FCE5", "$type": "color" },
      "200": { "$value": "#ceffd1", "$type": "color" },
      "300": { "$value": "#8FFF96", "$type": "color" },
      "400": { "$value": "#57FF61", "$type": "color" },
      "500": { "$value": "#1FFF2C", "$type": "color" },
      "600": { "$value": "#00F50F", "$type": "color" },
      "700": { "$value": "#00CC0D", "$type": "color" },
      "800": { "$value": "#00A30A", "$type": "color" },
      "900": { "$value": "#05760C", "$type": "color" },
      "950": { "$value": "#034907", "$type": "color" }
    },
    "brandInk": { "$value": "#000000", "$type": "color" }
  }
}

Best text color

Only one of black and white can be right. This is the one, with the number that proves it.

Readable at a glance#000000 on #ceffd1 · 18.85:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.11:1
AA fail · AA large fail · AAA fail
Aa
Black text · 18.85:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #ceffd1 as text scores 1.11:1 on white and 18.85:1 on black.
Best tinted ink on it, if plain black or white feels flat: #008008 at 4.61:1.

Make it accessible

A contrast checker tells you that you failed. This tells you what to ship instead — same hue, same saturation, lightness moved only as far as WCAG demands.

The quick fox
#008708 · 4.70:1
AA on white−64% L
#008708
The quick fox
#006806 · 7.04:1
AAA on white−70% L
#006806
The quick fox
#ceffd1 · 18.85:1
AA on blackalready passes
#ceffd1
The quick fox
#ceffd1 · 18.85:1
AAA on blackalready passes
#ceffd1

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #00AA0B is enough for headings on white. Non-text elements such as icons, chart strokes and focus rings also sit at 3:1 under WCAG 2.2 (1.4.11).

Accessibility — WCAG contrast

Aa
#ceffd1 on white: 1.11:1
AA ✗ fail · AA-large · AAA
Aa
#ceffd1 on black: 18.85:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #ceffd1 as text on that neutral, and that neutral as text on #ceffd1.

NeutralRatioBoth directions
White1.11:1AaAa
Slate 501.06:1AaAa
Slate 1001.02:1AaAa
Slate 2001.11:1AaAa
Slate 3001.33:1AaAa
Slate 4002.30:1AaAa
Slate 5004.27:1AaAa
Slate 6006.80:1AaAa
Slate 7009.29:1AaAa
Slate 80013.13:1AaAa
Slate 90016.02:1AaAa
Black18.85:1AaAa
Colour vision deficiency
true color
protanopia · #FFF6CE
deuteranopia · #F8F1D3
tritanopia · #C9FCF2

Roughly one man in twelve has some form of colour vision deficiency. If any of the three panels above is hard to tell apart from a neighbouring colour in your palette, add a shape, an icon or a label so the meaning does not rest on hue alone.

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #ceffd1 is pinned to step 200; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F1FEF2
#E3FCE5
#ceffd1
#8FFF96
#57FF61
#1FFF2C
#00F50F
#00CC0D
#00A30A
#05760C
#034907
Base = 200Lightest = 50 · #F1FEF2Darkest = 950 · #034907Text step on white = 900
Perceptual ramp — OKLCH

The same eleven steps expressed in OKLCH, where equal lightness numbers actually look equally spaced. HSL ramps go muddy in the yellows and washed out in the blues; this one does not. Modern browsers render it natively — the hex ramp above is the fallback.

50100200300400500600700800900950
oklch tokensclick to select
:root {
  --brand-50: oklch(0.97 0.020 146.5);
  --brand-100: oklch(0.94 0.032 146.5);
  --brand-200: oklch(0.88 0.047 146.5);
  --brand-300: oklch(0.80 0.062 146.5);
  --brand-400: oklch(0.72 0.073 146.5);
  --brand-500: oklch(0.64 0.079 146.5);
  --brand-600: oklch(0.56 0.079 146.5);
  --brand-700: oklch(0.48 0.074 146.5);
  --brand-800: oklch(0.40 0.066 146.5);
  --brand-900: oklch(0.32 0.055 146.5);
  --brand-950: oklch(0.24 0.044 146.5);
}

Colors that work with #ceffd1

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#000000
Black wins here
Surface#F4FAF5
Tinted page background
Border#C0EDC3
Hairlines and dividers
Muted text#4B9B50
Captions on the surface
Accent#A700CC
Second voice, not a rival
Dark variant#008008
Hover, pressed, headers
Light variant#E5FFE7
Selected rows, tints
Dark surface#142415
Dark-mode background
Hover#AAFFB0
One step down in lightness
Pressed#87FF8E
Two steps down
Disabled#F3F7F3
Chroma pulled out
Focus ring#D6FFD9
Offset from the fill so it reads
Light mode
Everything in its place

Surface, border, heading and body all derive from this one hue, so the screen stays coherent without a second palette.

Primary actionSecondaryBadge
Dark mode
Same hue, inverted

Lightness flips, hue holds. The accent stays the anchor in both themes.

Primary actionSecondaryAccent

In real components

The same eight roles, wired into the interface patterns you will actually build with them. Every state below is a computed value, not a mock-up.

Buttons and states
Save changesHoverPressedDisabled
OutlineSubtleLinkFocused
Form field
you@company.com

Focus ring uses the light variant so the field still reads as one shape.

Send me product updates
Notice
Your export is ready

The file stays available for seven days. Download it before it expires.

NewBetaDraft
Data
Storage used68%
Acme LtdActive
NorthwindTrial
GlobexActive

How to use #ceffd1

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Card and section backgrounds
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • White text placed on it
  • Status meaning — pair it with an icon or label, never colour alone
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
Not as text
Safe as a fill behind white type
No — use #008008
Safe as a 1px border on white
No — use #00AA0B

Meaning and mood

What a colour in this family tends to signal, and how this particular chroma and lightness change the reading.

safegrowingnaturalpermissive

Green means go, well, and grown. It carries finance, sustainability and health with almost no explanation needed.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. The high lightness makes it recede — a surface colour rather than a statement.

Worth knowing

Red/green pairs are the most common colour-blindness failure — never let the two carry meaning alone.

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight10/100
  • TemperatureCool
  • ApproachabilityBalanced

Colour associations are cultural and vary by market. Treat these as a starting point for a conversation with your audience, not a finding about them.

Similar colors

One move away from this hex in each direction. Every swatch is its own page.

Color relationships

The wheel positions with their names attached, so you can grab the one you actually need.

Complementary#FFCEFC
Analogous left#E4FFCE
Analogous right#CEFFEA
Split-complement 1#EACEFF
Split-complement 2#FFCEE4
Triadic 1#D1CEFF
Triadic 2#FFD1CE
Tetradic#CEE4FF
On the wheel
Base+30°−30°+120°+240°+180°124°

#ceffd1 sits at 124°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red80.8%
Green100.0%
Blue82.0%
R · 0–255
206
0xce
G · 0–255
255
0xff
B · 0–255
209
0xd1

CMYK percentages

Cyan19.2%
Magenta0.0%
Yellow18.0%
Key (black)0.0%

Total ink coverage is 37%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#ceffd1 text on a black background

contrast 18.85:1

Card sample

#ceffd1 text on a white background

contrast 1.11:1

Card sample

#ceffd1 on grey

1.02:1

#ceffd1 on its own surface

1.05:1

#ceffd1 on its dark surface

14.58:1

CSS3 live lab

Text font color

The quick brown fox

color: #ceffd1;
Background color
Panel with #ceffd1 background
background-color: #ceffd1;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #ceffd1;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(206, 255, 209, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(206, 255, 209, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ceffd1;
background: linear-gradient(135deg, #ceffd1, #CEFFF2);
Gradient text

Gradient headline

background: linear-gradient(90deg, #ceffd1, #CEFFFE);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #ceffd1;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #ceffd1;
caret-color: #ceffd1;
Left rule
Pull quote or callout
border-left: 4px solid #ceffd1;
Ring + tint
Selected chip
background: #E5FFE7;
box-shadow: inset 0 0 0 2px #ceffd1;
Conic badge
68%
background: conic-gradient(#ceffd1 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #ceffd1 over white; the bottom row is the same alpha over a checkerboard, so you can see what survives on a photo or a video.

Bottom row of hexes is the flattened result over white — use those when a design tool refuses transparency, or when you need a solid fallback.

alpha in every syntaxclick to select
rgba(206, 255, 209, 0.5)
rgb(206 255 209 / 50%)
#ceffd180
hsl(124 100% 90% / 50%)
color-mix(in srgb, #ceffd1 50%, transparent)
Alpha8-digit hexFlat on white
10%#ceffd11a#FAFFFA
20%#ceffd133#F5FFF6
40%#ceffd166#EBFFED
60%#ceffd199#E2FFE3
80%#ceffd1cc#D8FFDA

Gradients from #ceffd1

Six recipes, each built from this hex and shown with the exact CSS that produced it.

Elevation
Same hue, three lightnesses — safe anywhere
background: linear-gradient(135deg, #EBFFEC, #ceffd1 45%, #008008);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #ceffd1, #AFFFF0);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #ceffd1, #FFCEFC);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F0FFF1 0%, #ceffd1 45%, #008008 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF5, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #FFFFFF 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #EDFFF8 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #008008 0%, transparent 65%), #ceffd1;

Monochromatic scale

Palettes built from #ceffd1

Shades — darker

Tints — lighter

Tones — desaturated

Color harmonies

Nearest named colors

Ranked with CIEDE2000 across all 139 CSS keywords. Under ΔE 2 the eye stops telling them apart; over ΔE 10 they are plainly different colors.

#ceffd1 in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
SustainabilityFinanceHealth and wellnessAgriculture
Common UI roles
SurfacesBadgesHighlightsEmpty states
Print note

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

On screens

Very light values are indistinguishable from white on a dim phone screen outdoors. Give it a border if the boundary matters.

In dark mode

Usable as-is on a dark surface at 18.85:1.

Explore nearby colors

Small, deliberate steps away from this hex — useful when you are hunting for the version of a colour that finally feels right.

#ceffd1, answered

What color is #ceffd1?

#ceffd1 is a pale electric green, closest to Aqua Marine (ΔE2000 10.8). It sits at 124° on the hue wheel with 100% saturation and 90% lightness, which reads as cool.

What is the RGB value of #ceffd1?

rgb(206, 255, 209) — 206 red, 255 green and 209 blue out of 255, or 80.8% / 100% / 82% by channel.

What is #ceffd1 in HSL and HSV?

hsl(124, 100%, 90%) and hsv(124, 19%, 100%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #ceffd1 a light or a dark color?

It is a light color. Relative luminance is 0.8925 and perceived brightness is 93%, so black text on it reaches 18.85:1.

Should I use black or white text on #ceffd1?

Black. It scores 18.85:1 against #ceffd1, versus 1.11:1 for white — AAA at any size.

Is #ceffd1 accessible on a white background?

#ceffd1 on white scores 1.11:1, which fails WCAG AA at every size. Darken it to #008708 to reach 4.5:1, or #006806 for 7:1.

What is the complementary color of #ceffd1?

#FFCEFC sits directly opposite on the wheel. Softer options are the split-complements #EACEFF and #FFCEE4, which give the same contrast with far less vibration.

What colors go well with #ceffd1?

For interface work: #F4FAF5 as the surface, #C0EDC3 for borders, #4B9B50 for secondary text, #A700CC as an accent and #008008 for hover and pressed states. For a palette, the analogous pair #E4FFCE and #CEFFEA stays calm, while #FFCEFC is the loudest partner.

What is #ceffd1 in CMYK for printing?

cmyk(19%, 0%, 18%, 0%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #ceffd1 warm or cool?

Cool — it scores 64 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #DDFFCE; nudged cooler, #CEFFE3.

Which Tailwind color is closest to #ceffd1?

The green family — its 500 step is #22c55e, ΔE2000 21.7 away. That is a visible difference, so define #ceffd1 as a custom token rather than reaching for the built-in.

How do I use #ceffd1 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#ceffd1] or text-[#ceffd1], or register the whole ramp under theme.extend.colors.brand so you get bg-brand-500 and friends. The generated 50–950 scale on this page is ready to paste into your config.

What is #ceffd1 with 50% opacity?

rgba(206, 255, 209, 0.5), or #ceffd180 in eight-digit hex. Over white that composites to #E7FFE8; over black, #678069.

Is #ceffd1 a web-safe color?

No. The nearest web-safe colour is #CCFFCC, ΔE2000 1.2 away. The palette only matters for legacy displays and some email clients now.

What does the color #ceffd1 mean?

As a green, it reads safe, growing, natural. Green means go, well, and grown. It carries finance, sustainability and health with almost no explanation needed. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #ceffd1?

The safest is same-hue elevation: linear-gradient(135deg, #EBFFEC, #ceffd1 45%, #008008). For more colour, a short hue run to #AFFFF0 keeps it rich without turning muddy.

Work with #ceffd1 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #ceffd1 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.