#81BB31#81BB31

#81BB31 is a light, vivid yellow-green. Relative luminance 0.404; OKLCH L 72.6% C 0.175 H 130.0°. Best body text is #000000 at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#81BB31
RGB	rgb(129, 187, 49)
HSL	hsl(85, 58%, 46%)
HSV	hsv(85, 74%, 73%)
CMYK	cmyk(31%, 0%, 73.8%, 26.7%)
CIE-LAB	lab(69.77, -39.50, 59.91)
CIE-LCH	lch(69.77, 71.77, 123.40°)
OKLab	oklab(72.61% -0.1124 0.1339)
OKLCH	oklch(72.61% 0.175 130)
XYZ	xyz(27.3778, 40.4287, 9.2662)
Luminance	0.4043 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81BB31 #6B31BB

analogous

#BBB031 #81BB31 #3CBB31

triadic

#81BB31 #3181BB #BB3181

tetradic

#81BB31 #31BBB0 #6B31BB #BB313C

square

#81BB31 #31BBB0 #6B31BB #BB313C

split-complementary

#81BB31 #313CBB #B031BB

monochromatic

#3E5A18 #608B24 #81BB31 #9FD356 #BAE087

Accessibility & contrast

On white

2.31

#81BB31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.09

#81BB31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81BB31

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81BB31	#FFFFFF	#000000	##000000
##81BB31	1.00	2.31	9.09	9.09
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.09	21.00	1.00	1.00
##000000	9.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C4AD15

Deuteranopia (green-blind)

#BCA93E

Tritanopia (blue-blind)

#84B3A0

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #81bb31;
/* rgb */ color: rgb(129, 187, 49);
/* oklch */ color: oklch(72.6% 0.175 130.0);

Tailwind

colors: {
  custom: {
    50: '#aad073',
    500: '#81bb31',
    950: '#000000',
  },
}

SCSS

$custom: #81bb31;
$custom-light: #aad073;
$custom-dark: #000000;

JSON

{
  "hex": "#81bb31",
  "rgb": {
    "r": 129,
    "g": 187,
    "b": 49
  },
  "hsl": {
    "h": 85.217,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.7261,
    "c": 0.17476,
    "h": 130
  },
  "luminance": 0.4043
}

Semantic roles & 50–950 ramp

primary

#81BB31

secondary

#9E7FC9

accent

#46E287

background

#FAFCF7

surface

#F4F9ED

border

#CED2C8

text

#101409

muted

#7F827B

Preview Lab

Preview with #81BB31

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

Preview Lab → · Contrast checker → · Palette generator →