#81B737#81B737

#81B737 is a light, vivid yellow-green. Relative luminance 0.388; OKLCH L 71.7% C 0.166 H 129.7°. Best body text is #000000 at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#81B737
RGB	rgb(129, 183, 55)
HSL	hsl(85, 54%, 47%)
HSV	hsv(85, 70%, 72%)
CMYK	cmyk(29.5%, 0%, 69.9%, 28.2%)
CIE-LAB	lab(68.61, -37.35, 56.56)
CIE-LCH	lch(68.61, 67.78, 123.43°)
OKLab	oklab(71.68% -0.106 0.1277)
OKLCH	oklch(71.68% 0.166 129.7)
XYZ	xyz(26.6762, 38.8092, 9.6991)
Luminance	0.3881 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81B737 #6D37B7

analogous

#B7AD37 #81B737 #41B737

triadic

#81B737 #3781B7 #B73781

tetradic

#81B737 #37B7AD #6D37B7 #B73741

square

#81B737 #37B7AD #6D37B7 #B73741

split-complementary

#81B737 #3741B7 #AD37B7

monochromatic

#3F591B #608829 #81B737 #9ECE5D #BADC8C

Accessibility & contrast

On white

2.40

#81B737 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.76

#81B737 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81B737

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81B737	#FFFFFF	#000000	##000000
##81B737	1.00	2.40	8.76	8.76
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.76	21.00	1.00	1.00
##000000	8.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFAA23

Deuteranopia (green-blind)

#B8A642

Tritanopia (blue-blind)

#84AF9E

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #81b737;
/* rgb */ color: rgb(129, 183, 55);
/* oklch */ color: oklch(71.7% 0.166 129.7);

Tailwind

colors: {
  custom: {
    50: '#aacd75',
    500: '#81b737',
    950: '#000000',
  },
}

SCSS

$custom: #81b737;
$custom-light: #aacd75;
$custom-dark: #000000;

JSON

{
  "hex": "#81b737",
  "rgb": {
    "r": 129,
    "g": 183,
    "b": 55
  },
  "hsl": {
    "h": 85.313,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.71678,
    "c": 0.16598,
    "h": 129.7
  },
  "luminance": 0.3881
}

Semantic roles & 50–950 ramp

primary

#81B737

secondary

#A083C7

accent

#4BDD88

background

#FAFCF7

surface

#F4F9ED

border

#CED2C8

text

#101309

muted

#7F827B

Preview Lab

Preview with #81B737

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

Preview Lab → · Contrast checker → · Palette generator →