#81BF51#81BF51

#81BF51 is a light, vivid yellow-green. Relative luminance 0.425; OKLCH L 73.9% C 0.156 H 133.5°. Best body text is #000000 at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#81BF51
RGB	rgb(129, 191, 81)
HSL	hsl(94, 46%, 53%)
HSV	hsv(94, 58%, 75%)
CMYK	cmyk(32.5%, 0%, 57.6%, 25.1%)
CIE-LAB	lab(71.23, -38.73, 48.37)
CIE-LCH	lch(71.23, 61.97, 128.68°)
OKLab	oklab(73.88% -0.1077 0.1135)
OKLCH	oklch(73.88% 0.156 133.5)
XYZ	xyz(29.1687, 42.5217, 14.4536)
Luminance	0.4252 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81BF51 #8F51BF

analogous

#B8BF51 #81BF51 #51BF58

triadic

#81BF51 #5181BF #BF5181

tetradic

#81BF51 #51B8BF #8F51BF #BF5851

square

#81BF51 #51B8BF #8F51BF #BF5851

split-complementary

#81BF51 #5851BF #BF51B8

monochromatic

#466D28 #639A39 #81BF51 #A1CF7E #C2E0AA

Accessibility & contrast

On white

2.21

#81BF51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.50

#81BF51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81BF51

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81BF51	#FFFFFF	#000000	##000000
##81BF51	1.00	2.21	9.50	9.50
#FFFFFF	2.21	1.00	21.00	21.00
#000000	9.50	21.00	1.00	1.00
##000000	9.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C6B246

Deuteranopia (green-blind)

#BDAD59

Tritanopia (blue-blind)

#81B8A7

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #81bf51;
/* rgb */ color: rgb(129, 191, 81);
/* oklch */ color: oklch(73.9% 0.156 133.5);

Tailwind

colors: {
  custom: {
    50: '#a9d285',
    500: '#81bf51',
    950: '#000000',
  },
}

SCSS

$custom: #81bf51;
$custom-light: #a9d285;
$custom-dark: #000000;

JSON

{
  "hex": "#81bf51",
  "rgb": {
    "r": 129,
    "g": 191,
    "b": 81
  },
  "hsl": {
    "h": 93.818,
    "s": 46.218,
    "l": 53.333
  },
  "oklch": {
    "l": 0.73877,
    "c": 0.15645,
    "h": 133.5
  },
  "luminance": 0.42523
}

Semantic roles & 50–950 ramp

primary

#81BF51

secondary

#B99ECE

accent

#52D69C

background

#FAFCF8

surface

#F4F9EF

border

#CED2CA

text

#10140B

muted

#7F827C

Preview Lab

Preview with #81BF51

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

Preview Lab → · Contrast checker → · Palette generator →