#81CB37#81CB37

#81CB37 is a light, vivid yellow-green. Relative luminance 0.477; OKLCH L 76.6% C 0.191 H 132.7°. Best body text is #000000 at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#81CB37
RGB	rgb(129, 203, 55)
HSL	hsl(90, 59%, 51%)
HSV	hsv(90, 73%, 80%)
CMYK	cmyk(36.5%, 0%, 72.9%, 20.4%)
CIE-LAB	lab(74.61, -46.00, 62.58)
CIE-LCH	lch(74.61, 77.67, 126.32°)
OKLab	oklab(76.56% -0.1296 0.1403)
OKLCH	oklch(76.56% 0.191 132.7)
XYZ	xyz(31.0984, 47.6535, 11.1732)
Luminance	0.4765 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81CB37 #8137CB

analogous

#CBCB37 #81CB37 #37CB37

triadic

#81CB37 #3781CB #CB3781

tetradic

#81CB37 #37CBCB #8137CB #CB3737

square

#81CB37 #37CBCB #8137CB #CB3737

split-complementary

#81CB37 #3737CB #CB37CB

monochromatic

#446C1C #629C29 #81CB37 #A0D868 #BEE498

Accessibility & contrast

On white

1.99

#81CB37 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.53

#81CB37 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81CB37

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81CB37	#FFFFFF	#000000	##000000
##81CB37	1.00	1.99	10.53	10.53
#FFFFFF	1.99	1.00	21.00	21.00
#000000	10.53	21.00	1.00	1.00
##000000	10.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3BB1A

Deuteranopia (green-blind)

#C9B545

Tritanopia (blue-blind)

#82C3AE

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #81cb37;
/* rgb */ color: rgb(129, 203, 55);
/* oklch */ color: oklch(76.6% 0.191 132.7);

Tailwind

colors: {
  custom: {
    50: '#abdb78',
    500: '#81cb37',
    950: '#000000',
  },
}

SCSS

$custom: #81cb37;
$custom-light: #abdb78;
$custom-dark: #000000;

JSON

{
  "hex": "#81cb37",
  "rgb": {
    "r": 129,
    "g": 203,
    "b": 55
  },
  "hsl": {
    "h": 90,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.76562,
    "c": 0.19099,
    "h": 132.7
  },
  "luminance": 0.47655
}

Semantic roles & 50–950 ramp

primary

#81CB37

secondary

#AF8ED0

accent

#46E294

background

#FBFDF7

surface

#F6FBEE

border

#D0D4C9

text

#111509

muted

#80837B

Preview Lab

Preview with #81CB37

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

Preview Lab → · Contrast checker → · Palette generator →