#4ED21B#4ED21B

#4ED21B is a light, highly saturated green. Relative luminance 0.478; OKLCH L 76.1% C 0.234 H 139.5°. Best body text is #000000 at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#4ED21B
RGB	rgb(78, 210, 27)
HSL	hsl(103, 77%, 46%)
HSV	hsv(103, 87%, 82%)
CMYK	cmyk(62.9%, 0%, 87.1%, 17.6%)
CIE-LAB	lab(74.69, -64.74, 69.66)
CIE-LCH	lch(74.69, 95.10, 132.90°)
OKLab	oklab(76.06% -0.1782 0.1521)
OKLCH	oklch(76.06% 0.234 139.5)
XYZ	xyz(26.3851, 47.7895, 8.8705)
Luminance	0.4779 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4ED21B #9F1BD2

analogous

#AAD21B #4ED21B #1BD244

triadic

#4ED21B #1B4ED2 #D21B4E

tetradic

#4ED21B #1BAAD2 #9F1BD2 #D2441B

square

#4ED21B #1BAAD2 #9F1BD2 #D2441B

split-complementary

#4ED21B #441BD2 #D21BAA

monochromatic

#26660D #3A9C14 #4ED21B #71E743 #9AEE7A

Accessibility & contrast

On white

1.99

#4ED21B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.56

#4ED21B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #4ED21B

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4ED21B	#FFFFFF	#000000	##000000
##4ED21B	1.00	1.99	10.56	10.56
#FFFFFF	1.99	1.00	21.00	21.00
#000000	10.56	21.00	1.00	1.00
##000000	10.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8BE00

Deuteranopia (green-blind)

#C8B436

Tritanopia (blue-blind)

#3BCBB3

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #4ed21b;
/* rgb */ color: rgb(78, 210, 27);
/* oklch */ color: oklch(76.1% 0.234 139.5);

Tailwind

colors: {
  custom: {
    50: '#90e16d',
    500: '#4ed21b',
    950: '#000000',
  },
}

SCSS

$custom: #4ed21b;
$custom-light: #90e16d;
$custom-dark: #000000;

JSON

{
  "hex": "#4ed21b",
  "rgb": {
    "r": 78,
    "g": 210,
    "b": 27
  },
  "hsl": {
    "h": 103.279,
    "s": 77.215,
    "l": 46.471
  },
  "oklch": {
    "l": 0.76061,
    "c": 0.23433,
    "h": 139.5
  },
  "luminance": 0.47792
}

Semantic roles & 50–950 ramp

primary

#4ED21B

secondary

#BA73D5

accent

#34F4BE

background

#F9FDF7

surface

#F2FBED

border

#CCD4C8

text

#0E1508

muted

#7E837B

Preview Lab

Preview with #4ED21B

Body copy rendered with the generated semantic roles for this colour.

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