#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
RGB	rgb(129, 197, 55)
HSL	hsl(89, 56%, 49%)
HSV	hsv(89, 72%, 77%)
CMYK	cmyk(34.5%, 0%, 72.1%, 22.7%)
CIE-LAB	lab(72.81, -43.47, 60.80)
CIE-LCH	lch(72.81, 74.74, 125.57°)
OKLab	oklab(75.1% -0.1227 0.1366)
OKLCH	oklch(75.1% 0.184 131.9)
XYZ	xyz(29.7088, 44.8743, 10.7100)
Luminance	0.4487 (WCAG relative)
Temperature	warm
Family	yellow-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
##81C537	1.00	2.11	9.98	9.98
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.98	21.00	1.00	1.00
##000000	9.98	21.00	1.00	1.00

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 →