#81C537#81C537

#81C537 is a light, vivid yellow-green. Relative luminance 0.449; OKLCH L 75.1% C 0.184 H 131.9°. Best body text is #000000 at 9.98:1 contrast (WCAG AA passes).

Color values

HEX#81C537
RGBrgb(129, 197, 55)
HSLhsl(89, 56%, 49%)
HSVhsv(89, 72%, 77%)
CMYKcmyk(34.5%, 0%, 72.1%, 22.7%)
CIE-LABlab(72.81, -43.47, 60.80)
CIE-LCHlch(72.81, 74.74, 125.57°)
OKLaboklab(75.1% -0.1227 0.1366)
OKLCHoklch(75.1% 0.184 131.9)
XYZxyz(29.7088, 44.8743, 10.7100)
Luminance0.4487 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#81C537 #7B37C5
analogous
#C5C237 #81C537 #3AC537
triadic
#81C537 #3781C5 #C53781
tetradic
#81C537 #37C5C2 #7B37C5 #C5373A
square
#81C537 #37C5C2 #7B37C5 #C5373A
split-complementary
#81C537 #373AC5 #C237C5
monochromatic
#42651C #62952A #81C537 #9FD465 #BDE195

Accessibility & contrast

On white

2.11
#81C537 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.98
#81C537 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81C537
9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##81C537#FFFFFF#000000##000000
##81C5371.002.119.989.98
#FFFFFF2.111.0021.0021.00
#0000009.9821.001.001.00
##0000009.9821.001.001.00

Color blindness preview

Protanopia (red-blind)
#CDB61D
Deuteranopia (green-blind)
#C4B144
Tritanopia (blue-blind)
#83BDA9
Achromatopsia (no color)
#B3B3B3

Design tokens & code

CSS
--color: #81c537;
/* rgb */ color: rgb(129, 197, 55);
/* oklch */ color: oklch(75.1% 0.184 131.9);
Tailwind
colors: {
  custom: {
    50: '#abd777',
    500: '#81c537',
    950: '#000000',
  },
}
SCSS
$custom: #81c537;
$custom-light: #abd777;
$custom-dark: #000000;
JSON
{
  "hex": "#81c537",
  "rgb": {
    "r": 129,
    "g": 197,
    "b": 55
  },
  "hsl": {
    "h": 88.732,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.75096,
    "c": 0.1836,
    "h": 131.9
  },
  "luminance": 0.44875
}

Semantic roles & 50–950 ramp

primary
#81C537
secondary
#AB8BCD
accent
#48E091
background
#FAFDF7
surface
#F5FAEE
border
#CFD3C9
text
#111409
muted
#80837B

Preview Lab

Preview with #81C537

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

Preview Lab → · Contrast checker → · Palette generator →

#81C537 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva