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green · warm

#cef355

a balanced, electric green · warm · closest name: Green Yellow

Token name suggestion: Studio Basil

RGB
206, 243, 85
HSL
74°, 87%, 64%
CMYK
15, 0, 65, 5
Luminance
0.7788

#cef355 is a balanced electric green, 74° on the wheel and 37/100 on the cool side. Put black text on it (16.58:1). As text it scores 1.27:1 on white — use #627D09 instead. Nearest name is Green Yellow, nearest Tailwind family is lime.

hsl(74 87% 64%)rgb(206 243 85)Base step 400AAA inkWarm

At a glance

Every number on this page in one read: what #cef355 is made of, how bright it looks, and which way it leans.

Hex
#cef355
Hue
74°
green
Saturation
87%
electric
Lightness
64%
balanced
Brightness
95%
HSV value
Perceived
86%
weighted brightness
Luminance
0.7788
WCAG relative
Temperature
Warm
37/100 cool
Color family
Green
Tone
Electric
Best ink
Black
16.58:1
Closest name
Green Yellow
ΔE2000 6.1
Chroma
76.9
LCH, 0–130ish
OKLCH L
0.909
perceptual lightness
Tailwind
lime
500 · ΔE 11.7
Web-safe
#CCFF66
nearest of 216
Where it sits
Hue74° of 360°
Saturation87%
Lightness64%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #cef355.

Temperature
Warm ← → Cool37% cool

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

Luminance by channel
Red17%
Green82%
Blue1%

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

Every format

HEX#cef355
HEX (8-digit)#cef355ff
RGBrgb(206, 243, 85)
RGBArgba(206, 243, 85, 1)
HSLhsl(74, 87%, 64%)
HSV / HSBhsv(74, 65%, 95%)
HWBhwb(74 33% 5%)
CMYKcmyk(15%, 0%, 65%, 5%)
LABlab(90.7 -33.1 69.4)
LCHlch(90.7 76.9 115.5)
OKLCHoklch(0.909 0.184 121.5)
XYZ (D65)xyz(59.14, 77.88, 20.51)
Decimal13562709
Display P3color(display-p3 0.808 0.953 0.333)
Web-safe#CCFF66

Copy-ready code

every platformclick to select
/* CSS */
color: #cef355;
background-color: #cef355;
/* CSS custom property */
--brand: #cef355;
/* Tailwind (arbitrary) */
class="text-[#cef355] bg-[#cef355]"
/* SCSS */
$brand: #cef355;
/* SwiftUI */
Color(red: 0.808, green: 0.953, blue: 0.333)
/* UIKit */
UIColor(red: 0.808, green: 0.953, blue: 0.333, alpha: 1)
/* Android XML */
<color name="brand">#CEF355</color>
/* Android Compose */
Color(0xFFCEF355)
/* Flutter */
Color(0xFFCEF355)
/* Python / OpenCV (BGR) */
(85, 243, 206)
/* Python / PIL (RGB) */
(206, 243, 85)
/* Java AWT */
new Color(206, 243, 85)
/* .NET */
Color.FromArgb(255, 206, 243, 85)
/* OpenGL / Unity (0–1) */
(0.8078f, 0.9529f, 0.3333f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{206,243,85}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #cef355 85%, white);
border-color: color-mix(in oklab, #cef355 40%, transparent);
/* theme-aware in one line */
color: light-dark(#5D7708, #E8EED3);
/* relative colour syntax */
--hover: hsl(from #cef355 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: #FAFDF2;
  --brand-100: #F5FAE5;
  --brand-200: #EBF7C4;
  --brand-300: #E1F896;
  --brand-400: #cef355;
  --brand-500: #C2F02D;
  --brand-600: #B3E510;
  --brand-700: #95BF0D;
  --brand-800: #77980B;
  --brand-900: #576E0C;
  --brand-950: #364508;
  --brand: #cef355;
  --brand-ink: #000000;
  --brand-surface: #F9FAF4;
  --brand-border: #E2EDC0;
  --brand-hover: #C4F134;
  --brand-pressed: #BBEE12;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #212414;
    --brand-ink: #E8EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FAFDF2',
        100: '#F5FAE5',
        200: '#EBF7C4',
        300: '#E1F896',
        400: '#cef355',
        500: '#C2F02D',
        600: '#B3E510',
        700: '#95BF0D',
        800: '#77980B',
        900: '#576E0C',
        950: '#364508',
        DEFAULT: '#cef355',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FAFDF2,
  '100': #F5FAE5,
  '200': #EBF7C4,
  '300': #E1F896,
  '400': #cef355,
  '500': #C2F02D,
  '600': #B3E510,
  '700': #95BF0D,
  '800': #77980B,
  '900': #576E0C,
  '950': #364508,
);
$brand-base: #cef355;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FAFDF2", "$type": "color" },
      "100": { "$value": "#F5FAE5", "$type": "color" },
      "200": { "$value": "#EBF7C4", "$type": "color" },
      "300": { "$value": "#E1F896", "$type": "color" },
      "400": { "$value": "#cef355", "$type": "color" },
      "500": { "$value": "#C2F02D", "$type": "color" },
      "600": { "$value": "#B3E510", "$type": "color" },
      "700": { "$value": "#95BF0D", "$type": "color" },
      "800": { "$value": "#77980B", "$type": "color" },
      "900": { "$value": "#576E0C", "$type": "color" },
      "950": { "$value": "#364508", "$type": "color" }
    },
    "brandInk": { "$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 #cef355 · 16.58:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.27:1
AA fail · AA large fail · AAA fail
Aa
Black text · 16.58:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #cef355 as text scores 1.27:1 on white and 16.58:1 on black.
Best tinted ink on it, if plain black or white feels flat: #5D7708 at 4.04:1.

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
#627D09 · 4.71:1
AA on white−38% L
#627D09
The quick fox
#485C06 · 7.48:1
AAA on white−45% L
#485C06
The quick fox
#cef355 · 16.58:1
AA on blackalready passes
#cef355
The quick fox
#cef355 · 16.58:1
AAA on blackalready passes
#cef355

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #7C9F0B 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
#cef355 on white: 1.27:1
AA ✗ fail · AA-large · AAA
Aa
#cef355 on black: 16.58:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #cef355 as text on that neutral, and that neutral as text on #cef355.

NeutralRatioBoth directions
White1.27:1AaAa
Slate 501.21:1AaAa
Slate 1001.16:1AaAa
Slate 2001.03:1AaAa
Slate 3001.17:1AaAa
Slate 4002.02:1AaAa
Slate 5003.76:1AaAa
Slate 6005.98:1AaAa
Slate 7008.17:1AaAa
Slate 80011.55:1AaAa
Slate 90014.09:1AaAa
Black16.58:1AaAa
Colour vision deficiency
true color
protanopia · #FFE53F
deuteranopia · #FCE561
tritanopia · #D8E7D3

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. #cef355 is pinned to step 400; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FAFDF2
#F5FAE5
#EBF7C4
#E1F896
#cef355
#C2F02D
#B3E510
#95BF0D
#77980B
#576E0C
#364508
Base = 400Lightest = 50 · #FAFDF2Darkest = 950 · #364508Text 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 0.046 121.5);
  --brand-100: oklch(0.94 0.074 121.5);
  --brand-200: oklch(0.88 0.111 121.5);
  --brand-300: oklch(0.80 0.144 121.5);
  --brand-400: oklch(0.72 0.170 121.5);
  --brand-500: oklch(0.64 0.184 121.5);
  --brand-600: oklch(0.56 0.184 121.5);
  --brand-700: oklch(0.48 0.173 121.5);
  --brand-800: oklch(0.40 0.155 121.5);
  --brand-900: oklch(0.32 0.129 121.5);
  --brand-950: oklch(0.24 0.101 121.5);
}

Colors that work with #cef355

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#F9FAF4
Tinted page background
Border#E2EDC0
Hairlines and dividers
Muted text#889B4B
Captions on the surface
Accent#5154F7
Second voice, not a rival
Dark variant#5D7708
Hover, pressed, headers
Light variant#F8FDE7
Selected rows, tints
Dark surface#212414
Dark-mode background
Hover#C4F134
One step down in lightness
Pressed#BBEE12
Two steps down
Disabled#E0E4D4
Chroma pulled out
Focus ring#D8FC60
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 #cef355

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
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • 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 #5D7708
Safe as a 1px border on white
No — use #7C9F0B

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 mid lightness keeps it versatile in both themes.

Worth knowing

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

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight36/100
  • TemperatureWarm
  • ApproachabilityHigh

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#7A55F3
Analogous left#F3C955
Analogous right#7FF355
Split-complement 1#557FF3
Split-complement 2#C955F3
Triadic 1#55CEF3
Triadic 2#F355CE
Tetradic#55F3C9
On the wheel
Base+30°−30°+120°+240°+180°74°

#cef355 sits at 74°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red80.8%
Green95.3%
Blue33.3%
R · 0–255
206
0xce
G · 0–255
243
0xf3
B · 0–255
85
0x55

CMYK percentages

Cyan15.2%
Magenta0.0%
Yellow65.0%
Key (black)4.7%

Total ink coverage is 85%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#cef355 text on a black background

contrast 16.58:1

Card sample

#cef355 text on a white background

contrast 1.27:1

Card sample

#cef355 on grey

1.16:1

#cef355 on its own surface

1.21:1

#cef355 on its dark surface

12.49:1

CSS3 live lab

Text font color

The quick brown fox

color: #cef355;
Background color
Panel with #cef355 background
background-color: #cef355;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #cef355;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(206, 243, 85, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(206, 243, 85, 0.45);
Border & gradient
Gradient panel
border: 3px solid #cef355;
background: linear-gradient(135deg, #cef355, #64F355);
Gradient text

Gradient headline

background: linear-gradient(90deg, #cef355, #55F36D);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #cef355;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #cef355;
caret-color: #cef355;
Left rule
Pull quote or callout
border-left: 4px solid #cef355;
Ring + tint
Selected chip
background: #F8FDE7;
box-shadow: inset 0 0 0 2px #cef355;
Conic badge
68%
background: conic-gradient(#cef355 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #cef355 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, 243, 85, 0.5)
rgb(206 243 85 / 50%)
#cef35580
hsl(74 87% 64% / 50%)
color-mix(in srgb, #cef355 50%, transparent)
Alpha8-digit hexFlat on white
10%#cef3551a#FAFEEE
20%#cef35533#F5FDDD
40%#cef35566#EBFABB
60%#cef35599#E2F899
80%#cef355cc#D8F577

Gradients from #cef355

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, #DEF78E, #cef355 45%, #5D7708);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #cef355, #3BF138);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #cef355, #7A55F3);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #E7F9AB 0%, #cef355 45%, #5D7708 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F9FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #F6CF85 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #89F572 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #5D7708 0%, transparent 65%), #cef355;

Monochromatic scale

Palettes built from #cef355

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.

#cef355 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
ButtonsLinksFocus statesCharts
Print note

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

On screens

Holds up across typical panel gamma. Still worth checking on an uncalibrated laptop, where mid-tones shift most.

In dark mode

Usable as-is on a dark surface at 16.58:1.

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.

#cef355, answered

What color is #cef355?

#cef355 is a balanced electric green, closest to Green Yellow (ΔE2000 6.1). It sits at 74° on the hue wheel with 87% saturation and 64% lightness, which reads as warm.

What is the RGB value of #cef355?

rgb(206, 243, 85) — 206 red, 243 green and 85 blue out of 255, or 80.8% / 95.3% / 33.3% by channel.

What is #cef355 in HSL and HSV?

hsl(74, 87%, 64%) and hsv(74, 65%, 95%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #cef355 a light or a dark color?

It is a light color. Relative luminance is 0.7788 and perceived brightness is 86%, so black text on it reaches 16.58:1.

Should I use black or white text on #cef355?

Black. It scores 16.58:1 against #cef355, versus 1.27:1 for white — AAA at any size.

Is #cef355 accessible on a white background?

#cef355 on white scores 1.27:1, which fails WCAG AA at every size. Darken it to #627D09 to reach 4.5:1, or #485C06 for 7:1.

What is the complementary color of #cef355?

#7A55F3 sits directly opposite on the wheel. Softer options are the split-complements #557FF3 and #C955F3, which give the same contrast with far less vibration.

What colors go well with #cef355?

For interface work: #F9FAF4 as the surface, #E2EDC0 for borders, #889B4B for secondary text, #5154F7 as an accent and #5D7708 for hover and pressed states. For a palette, the analogous pair #F3C955 and #7FF355 stays calm, while #7A55F3 is the loudest partner.

What is #cef355 in CMYK for printing?

cmyk(15%, 0%, 65%, 5%). 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 #cef355 warm or cool?

Warm — it scores 37 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #F3DE55; nudged cooler, #94F553.

Which Tailwind color is closest to #cef355?

The lime family — its 500 step is #84cc16, ΔE2000 11.7 away. That is a visible difference, so define #cef355 as a custom token rather than reaching for the built-in.

How do I use #cef355 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#cef355] or text-[#cef355], 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 #cef355 with 50% opacity?

rgba(206, 243, 85, 0.5), or #cef35580 in eight-digit hex. Over white that composites to #E7F9AA; over black, #677A2B.

Is #cef355 a web-safe color?

No. The nearest web-safe colour is #CCFF66, ΔE2000 3.4 away. The palette only matters for legacy displays and some email clients now.

What does the color #cef355 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 #cef355?

The safest is same-hue elevation: linear-gradient(135deg, #DEF78E, #cef355 45%, #5D7708). For more colour, a short hue run to #3BF138 keeps it rich without turning muddy.

Work with #cef355 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #cef355 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.