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green · warm

#cdfc3d

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

Token name suggestion: Studio Fern

RGB
205, 252, 61
HSL
75°, 97%, 61%
CMYK
19, 0, 76, 1
Luminance
0.8294

#cdfc3d is a balanced electric green, 75° on the wheel and 37/100 on the cool side. Put black text on it (17.59:1). As text it scores 1.19:1 on white — use #618002 instead. Nearest name is Green Yellow, nearest Tailwind family is lime.

hsl(75 97% 61%)rgb(205 252 61)Base step 500AAA inkWarm

At a glance

Every number on this page in one read: what #cdfc3d is made of, how bright it looks, and which way it leans.

Hex
#cdfc3d
Hue
75°
green
Saturation
97%
electric
Lightness
61%
balanced
Brightness
99%
HSV value
Perceived
88%
weighted brightness
Luminance
0.8294
WCAG relative
Temperature
Warm
37/100 cool
Color family
Green
Tone
Electric
Best ink
Black
17.59:1
Closest name
Green Yellow
ΔE2000 4.7
Chroma
88.7
LCH, 0–130ish
OKLCH L
0.926
perceptual lightness
Tailwind
lime
500 · ΔE 12.8
Web-safe
#CCFF33
nearest of 216
Where it sits
Hue75° of 360°
Saturation97%
Lightness61%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #cdfc3d.

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
Red16%
Green84%
Blue0%

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

Every format

HEX#cdfc3d
HEX (8-digit)#cdfc3dff
RGBrgb(205, 252, 61)
RGBArgba(205, 252, 61, 1)
HSLhsl(75, 97%, 61%)
HSV / HSBhsv(75, 76%, 99%)
HWBhwb(75 24% 1%)
CMYKcmyk(19%, 0%, 76%, 1%)
LABlab(93.0 -38.9 79.8)
LCHlch(93.0 88.7 116.0)
OKLCHoklch(0.926 0.209 123.0)
XYZ (D65)xyz(60.83, 82.94, 17.22)
Decimal13499453
Display P3color(display-p3 0.804 0.988 0.239)
Web-safe#CCFF33

Copy-ready code

every platformclick to select
/* CSS */
color: #cdfc3d;
background-color: #cdfc3d;
/* CSS custom property */
--brand: #cdfc3d;
/* Tailwind (arbitrary) */
class="text-[#cdfc3d] bg-[#cdfc3d]"
/* SCSS */
$brand: #cdfc3d;
/* SwiftUI */
Color(red: 0.804, green: 0.988, blue: 0.239)
/* UIKit */
UIColor(red: 0.804, green: 0.988, blue: 0.239, alpha: 1)
/* Android XML */
<color name="brand">#CDFC3D</color>
/* Android Compose */
Color(0xFFCDFC3D)
/* Flutter */
Color(0xFFCDFC3D)
/* Python / OpenCV (BGR) */
(61, 252, 205)
/* Python / PIL (RGB) */
(205, 252, 61)
/* Java AWT */
new Color(205, 252, 61)
/* .NET */
Color.FromArgb(255, 205, 252, 61)
/* OpenGL / Unity (0–1) */
(0.8039f, 0.9882f, 0.2392f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{205,252,61}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #cdfc3d 85%, white);
border-color: color-mix(in oklab, #cdfc3d 40%, transparent);
/* theme-aware in one line */
color: light-dark(#5F7E02, #E7EED3);
/* relative colour syntax */
--hover: hsl(from #cdfc3d 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: #FAFDF1;
  --brand-100: #F6FCE4;
  --brand-200: #ECFBC1;
  --brand-300: #E2FD90;
  --brand-400: #D4FC59;
  --brand-500: #cdfc3d;
  --brand-600: #B7F104;
  --brand-700: #98C903;
  --brand-800: #7AA102;
  --brand-900: #597407;
  --brand-950: #384804;
  --brand: #cdfc3d;
  --brand-ink: #000000;
  --brand-surface: #F9FAF4;
  --brand-border: #E2EDC0;
  --brand-hover: #C4FC1A;
  --brand-pressed: #B4EE04;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #202414;
    --brand-ink: #E7EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FAFDF1',
        100: '#F6FCE4',
        200: '#ECFBC1',
        300: '#E2FD90',
        400: '#D4FC59',
        500: '#cdfc3d',
        600: '#B7F104',
        700: '#98C903',
        800: '#7AA102',
        900: '#597407',
        950: '#384804',
        DEFAULT: '#cdfc3d',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FAFDF1,
  '100': #F6FCE4,
  '200': #ECFBC1,
  '300': #E2FD90,
  '400': #D4FC59,
  '500': #cdfc3d,
  '600': #B7F104,
  '700': #98C903,
  '800': #7AA102,
  '900': #597407,
  '950': #384804,
);
$brand-base: #cdfc3d;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FAFDF1", "$type": "color" },
      "100": { "$value": "#F6FCE4", "$type": "color" },
      "200": { "$value": "#ECFBC1", "$type": "color" },
      "300": { "$value": "#E2FD90", "$type": "color" },
      "400": { "$value": "#D4FC59", "$type": "color" },
      "500": { "$value": "#cdfc3d", "$type": "color" },
      "600": { "$value": "#B7F104", "$type": "color" },
      "700": { "$value": "#98C903", "$type": "color" },
      "800": { "$value": "#7AA102", "$type": "color" },
      "900": { "$value": "#597407", "$type": "color" },
      "950": { "$value": "#384804", "$type": "color" }
    },
    "brandInk": { "$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 #cdfc3d · 17.59:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.19:1
AA fail · AA large fail · AAA fail
Aa
Black text · 17.59:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #cdfc3d as text scores 1.19:1 on white and 17.59:1 on black.
Best tinted ink on it, if plain black or white feels flat: #5F7E02 at 3.93:1.

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
#618002 · 4.57:1
AA on white−36% L
#618002
The quick fox
#4A6101 · 7.00:1
AAA on white−42% L
#4A6101
The quick fox
#cdfc3d · 17.59:1
AA on blackalready passes
#cdfc3d
The quick fox
#cdfc3d · 17.59:1
AAA on blackalready passes
#cdfc3d

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #779E02 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
#cdfc3d on white: 1.19:1
AA ✗ fail · AA-large · AAA
Aa
#cdfc3d on black: 17.59:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #cdfc3d as text on that neutral, and that neutral as text on #cdfc3d.

NeutralRatioBoth directions
White1.19:1AaAa
Slate 501.14:1AaAa
Slate 1001.09:1AaAa
Slate 2001.03:1AaAa
Slate 3001.24:1AaAa
Slate 4002.15:1AaAa
Slate 5003.99:1AaAa
Slate 6006.35:1AaAa
Slate 7008.67:1AaAa
Slate 80012.25:1AaAa
Slate 90014.95:1AaAa
Black17.59:1AaAa
Colour vision deficiency
true color
protanopia · #FFEC00
deuteranopia · #FFEB50
tritanopia · #D8EFD8

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. #cdfc3d is pinned to step 500; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FAFDF1
#F6FCE4
#ECFBC1
#E2FD90
#D4FC59
#cdfc3d
#B7F104
#98C903
#7AA102
#597407
#384804
Base = 500Lightest = 50 · #FAFDF1Darkest = 950 · #384804Text 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 0.052 123.0);
  --brand-100: oklch(0.94 0.084 123.0);
  --brand-200: oklch(0.88 0.126 123.0);
  --brand-300: oklch(0.80 0.163 123.0);
  --brand-400: oklch(0.72 0.193 123.0);
  --brand-500: oklch(0.64 0.209 123.0);
  --brand-600: oklch(0.56 0.209 123.0);
  --brand-700: oklch(0.48 0.197 123.0);
  --brand-800: oklch(0.40 0.176 123.0);
  --brand-900: oklch(0.32 0.147 123.0);
  --brand-950: oklch(0.24 0.115 123.0);
}

Colors that work with #cdfc3d

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#879B4B
Captions on the surface
Accent#3A3BFF
Second voice, not a rival
Dark variant#5F7E02
Hover, pressed, headers
Light variant#F9FFE6
Selected rows, tints
Dark surface#202414
Dark-mode background
Hover#C4FC1A
One step down in lightness
Pressed#B4EE04
Two steps down
Disabled#D9DECB
Chroma pulled out
Focus ring#D3FF4F
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 #cdfc3d

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 #5F7E02
Safe as a 1px border on white
No — use #779E02

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
  • Weight39/100
  • 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#6C3DFC
Analogous left#FCCC3D
Analogous right#6DFC3D
Split-complement 1#3D6DFC
Split-complement 2#CC3DFC
Triadic 1#3DCDFC
Triadic 2#FC3DCD
Tetradic#3DFCCC
On the wheel
Base+30°−30°+120°+240°+180°75°

#cdfc3d sits at 75°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red80.4%
Green98.8%
Blue23.9%
R · 0–255
205
0xcd
G · 0–255
252
0xfc
B · 0–255
61
0x3d

CMYK percentages

Cyan18.7%
Magenta0.0%
Yellow75.8%
Key (black)1.2%

Total ink coverage is 96%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#cdfc3d text on a black background

contrast 17.59:1

Card sample

#cdfc3d text on a white background

contrast 1.19:1

Card sample

#cdfc3d on grey

1.09:1

#cdfc3d on its own surface

1.14:1

#cdfc3d on its dark surface

13.28:1

CSS3 live lab

Text font color

The quick brown fox

color: #cdfc3d;
Background color
Panel with #cdfc3d background
background-color: #cdfc3d;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #cdfc3d;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(205, 252, 61, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(205, 252, 61, 0.45);
Border & gradient
Gradient panel
border: 3px solid #cdfc3d;
background: linear-gradient(135deg, #cdfc3d, #4EFC3D);
Gradient text

Gradient headline

background: linear-gradient(90deg, #cdfc3d, #3DFC5C);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #cdfc3d;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #cdfc3d;
caret-color: #cdfc3d;
Left rule
Pull quote or callout
border-left: 4px solid #cdfc3d;
Ring + tint
Selected chip
background: #F9FFE6;
box-shadow: inset 0 0 0 2px #cdfc3d;
Conic badge
68%
background: conic-gradient(#cdfc3d 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #cdfc3d 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(205, 252, 61, 0.5)
rgb(205 252 61 / 50%)
#cdfc3d80
hsl(75 97% 61% / 50%)
color-mix(in srgb, #cdfc3d 50%, transparent)
Alpha8-digit hexFlat on white
10%#cdfc3d1a#FAFFEC
20%#cdfc3d33#F5FED8
40%#cdfc3d66#EBFEB1
60%#cdfc3d99#E1FD8B
80%#cdfc3dcc#D7FD64

Gradients from #cdfc3d

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, #DDFD79, #cdfc3d 45%, #5F7E02);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #cdfc3d, #20FC1F);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #cdfc3d, #6C3DFC);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #E4FD98 0%, #cdfc3d 45%, #5F7E02 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%, #FDCD6F 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #77FD5B 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #5F7E02 0%, transparent 65%), #cdfc3d;

Monochromatic scale

Palettes built from #cdfc3d

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.

#cdfc3d 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 17.59:1.

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.

#cdfc3d, answered

What color is #cdfc3d?

#cdfc3d is a balanced electric green, closest to Green Yellow (ΔE2000 4.7). It sits at 75° on the hue wheel with 97% saturation and 61% lightness, which reads as warm.

What is the RGB value of #cdfc3d?

rgb(205, 252, 61) — 205 red, 252 green and 61 blue out of 255, or 80.4% / 98.8% / 23.9% by channel.

What is #cdfc3d in HSL and HSV?

hsl(75, 97%, 61%) and hsv(75, 76%, 99%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #cdfc3d a light or a dark color?

It is a light color. Relative luminance is 0.8294 and perceived brightness is 88%, so black text on it reaches 17.59:1.

Should I use black or white text on #cdfc3d?

Black. It scores 17.59:1 against #cdfc3d, versus 1.19:1 for white — AAA at any size.

Is #cdfc3d accessible on a white background?

#cdfc3d on white scores 1.19:1, which fails WCAG AA at every size. Darken it to #618002 to reach 4.5:1, or #4A6101 for 7:1.

What is the complementary color of #cdfc3d?

#6C3DFC sits directly opposite on the wheel. Softer options are the split-complements #3D6DFC and #CC3DFC, which give the same contrast with far less vibration.

What colors go well with #cdfc3d?

For interface work: #F9FAF4 as the surface, #E2EDC0 for borders, #879B4B for secondary text, #3A3BFF as an accent and #5F7E02 for hover and pressed states. For a palette, the analogous pair #FCCC3D and #6DFC3D stays calm, while #6C3DFC is the loudest partner.

What is #cdfc3d in CMYK for printing?

cmyk(19%, 0%, 76%, 1%). 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 #cdfc3d 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 #FCE53D; nudged cooler, #86FE3B.

Which Tailwind color is closest to #cdfc3d?

The lime family — its 500 step is #84cc16, ΔE2000 12.8 away. That is a visible difference, so define #cdfc3d as a custom token rather than reaching for the built-in.

How do I use #cdfc3d in Tailwind CSS?

Inline it as an arbitrary value with bg-[#cdfc3d] or text-[#cdfc3d], 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 #cdfc3d with 50% opacity?

rgba(205, 252, 61, 0.5), or #cdfc3d80 in eight-digit hex. Over white that composites to #E6FE9E; over black, #677E1F.

Is #cdfc3d a web-safe color?

No. The nearest web-safe colour is #CCFF33, ΔE2000 0.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #cdfc3d 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 #cdfc3d?

The safest is same-hue elevation: linear-gradient(135deg, #DDFD79, #cdfc3d 45%, #5F7E02). For more colour, a short hue run to #20FC1F keeps it rich without turning muddy.

Work with #cdfc3d in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #cdfc3d at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.