#81C73B#81C73B

#81C73B is a light, vivid yellow-green. Relative luminance 0.458; OKLCH L 75.6% C 0.184 H 132.5°. Best body text is #000000 at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#81C73B
RGB	rgb(129, 199, 59)
HSL	hsl(90, 56%, 51%)
HSV	hsv(90, 70%, 78%)
CMYK	cmyk(35.2%, 0%, 70.4%, 22%)
CIE-LAB	lab(73.43, -44.06, 59.97)
CIE-LCH	lch(73.43, 74.41, 126.30°)
OKLab	oklab(75.61% -0.124 0.1354)
OKLCH	oklch(75.61% 0.184 132.5)
XYZ	xyz(30.2657, 45.8285, 11.3879)
Luminance	0.4583 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81C73B #813BC7

analogous

#C7C73B #81C73B #3BC73B

triadic

#81C73B #3B81C7 #C73B81

tetradic

#81C73B #3BC7C7 #813BC7 #C73B3B

square

#81C73B #3BC7C7 #813BC7 #C73B3B

split-complementary

#81C73B #3B3BC7 #C73BC7

monochromatic

#44691E #62992C #81C73B #A0D56B #BEE29A

Accessibility & contrast

On white

2.07

#81C73B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.17

#81C73B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81C73B

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81C73B	#FFFFFF	#000000	##000000
##81C73B	1.00	2.07	10.17	10.17
#FFFFFF	2.07	1.00	21.00	21.00
#000000	10.17	21.00	1.00	1.00
##000000	10.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CFB824

Deuteranopia (green-blind)

#C6B248

Tritanopia (blue-blind)

#82BFAB

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #81c73b;
/* rgb */ color: rgb(129, 199, 59);
/* oklch */ color: oklch(75.6% 0.184 132.5);

Tailwind

colors: {
  custom: {
    50: '#abd879',
    500: '#81c73b',
    950: '#000000',
  },
}

SCSS

$custom: #81c73b;
$custom-light: #abd879;
$custom-dark: #000000;

JSON

{
  "hex": "#81c73b",
  "rgb": {
    "r": 129,
    "g": 199,
    "b": 59
  },
  "hsl": {
    "h": 90,
    "s": 55.556,
    "l": 50.588
  },
  "oklch": {
    "l": 0.75614,
    "c": 0.1836,
    "h": 132.5
  },
  "luminance": 0.4583
}

Semantic roles & 50–950 ramp

primary

#81C73B

secondary

#AF90CE

accent

#49DF94

background

#FAFDF7

surface

#F5FAEE

border

#CFD3C9

text

#10140A

muted

#7F837C

Preview Lab

Preview with #81C73B

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

Preview Lab → · Contrast checker → · Palette generator →