#81B033#81B033

#81B033 is a light, vivid yellow-green. Relative luminance 0.360; OKLCH L 69.9% C 0.160 H 128.0°. Best body text is #000000 at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#81B033
RGB	rgb(129, 176, 51)
HSL	hsl(83, 55%, 45%)
HSV	hsv(83, 71%, 69%)
CMYK	cmyk(26.7%, 0%, 71%, 31%)
CIE-LAB	lab(66.49, -34.44, 55.93)
CIE-LCH	lch(66.49, 65.68, 121.62°)
OKLab	oklab(69.94% -0.0984 0.1258)
OKLCH	oklch(69.94% 0.16 128)
XYZ	xyz(25.1761, 35.9563, 8.7452)
Luminance	0.3596 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81B033 #6233B0

analogous

#B0A133 #81B033 #43B033

triadic

#81B033 #3381B0 #B03381

tetradic

#81B033 #33B0A1 #6233B0 #B03343

square

#81B033 #33B0A1 #6233B0 #B03343

split-complementary

#81B033 #3343B0 #A133B0

monochromatic

#3B5118 #5E8125 #81B033 #9FCD53 #BADB82

Accessibility & contrast

On white

2.56

#81B033 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.19

#81B033 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81B033

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81B033	#FFFFFF	#000000	##000000
##81B033	1.00	2.56	8.19	8.19
#FFFFFF	2.56	1.00	21.00	21.00
#000000	8.19	21.00	1.00	1.00
##000000	8.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A41E

Deuteranopia (green-blind)

#B2A13E

Tritanopia (blue-blind)

#85A897

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #81b033;
/* rgb */ color: rgb(129, 176, 51);
/* oklch */ color: oklch(69.9% 0.160 128.0);

Tailwind

colors: {
  custom: {
    50: '#a9c872',
    500: '#81b033',
    950: '#000000',
  },
}

SCSS

$custom: #81b033;
$custom-light: #a9c872;
$custom-dark: #000000;

JSON

{
  "hex": "#81b033",
  "rgb": {
    "r": 129,
    "g": 176,
    "b": 51
  },
  "hsl": {
    "h": 82.56,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.69941,
    "c": 0.1597,
    "h": 128
  },
  "luminance": 0.35957
}

Semantic roles & 50–950 ramp

primary

#81B033

secondary

#967BC4

accent

#49DE81

background

#FAFCF7

surface

#F4F8ED

border

#CED1C8

text

#101308

muted

#7F827B

Preview Lab

Preview with #81B033

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

Preview Lab → · Contrast checker → · Palette generator →