#81CB3B#81CB3B

#81CB3B is a light, vivid yellow-green. Relative luminance 0.477; OKLCH L 76.6% C 0.189 H 133.0°. Best body text is #000000 at 10.54:1 contrast (WCAG AA passes).

Color values

HEX#81CB3B
RGBrgb(129, 203, 59)
HSLhsl(91, 58%, 51%)
HSVhsv(91, 71%, 80%)
CMYKcmyk(36.5%, 0%, 70.9%, 20.4%)
CIE-LABlab(74.63, -45.75, 61.18)
CIE-LCHlch(74.63, 76.39, 126.79°)
OKLaboklab(76.59% -0.1286 0.138)
OKLCHoklch(76.59% 0.189 133)
XYZxyz(31.1982, 47.6934, 11.6988)
Luminance0.4769 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#81CB3B #853BCB
analogous
#C9CB3B #81CB3B #3BCB3D
triadic
#81CB3B #3B81CB #CB3B81
tetradic
#81CB3B #3BC9CB #853BCB #CB3D3B
square
#81CB3B #3BC9CB #853BCB #CB3D3B
split-complementary
#81CB3B #3D3BCB #CB3BC9
monochromatic
#456E1D #639F2A #81CB3B #A0D86B #BFE59C

Accessibility & contrast

On white

1.99
#81CB3B on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.54
#81CB3B on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81CB3B
10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##81CB3B#FFFFFF#000000##000000
##81CB3B1.001.9910.5410.54
#FFFFFF1.991.0021.0021.00
#00000010.5421.001.001.00
##00000010.5421.001.001.00

Color blindness preview

Protanopia (red-blind)
#D3BB23
Deuteranopia (green-blind)
#C9B648
Tritanopia (blue-blind)
#82C3AF
Achromatopsia (no color)
#B8B8B8

Design tokens & code

CSS
--color: #81cb3b;
/* rgb */ color: rgb(129, 203, 59);
/* oklch */ color: oklch(76.6% 0.189 133.0);
Tailwind
colors: {
  custom: {
    50: '#abdb7a',
    500: '#81cb3b',
    950: '#000000',
  },
}
SCSS
$custom: #81cb3b;
$custom-light: #abdb7a;
$custom-dark: #000000;
JSON
{
  "hex": "#81cb3b",
  "rgb": {
    "r": 129,
    "g": 203,
    "b": 59
  },
  "hsl": {
    "h": 90.833,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.76591,
    "c": 0.18858,
    "h": 133
  },
  "luminance": 0.47695
}

Semantic roles & 50–950 ramp

primary
#81CB3B
secondary
#B291D1
accent
#47E196
background
#FAFDF7
surface
#F5FBEE
border
#CFD4C9
text
#11150A
muted
#80837C

Preview Lab

Preview with #81CB3B

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

Preview Lab → · Contrast checker → · Palette generator →

#81CB3B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva