#81D137#81D137

#81D137 is a light, vivid yellow-green. Relative luminance 0.505; OKLCH L 78.0% C 0.198 H 133.4°. Best body text is #000000 at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#81D137
RGB	rgb(129, 209, 55)
HSL	hsl(91, 63%, 52%)
HSV	hsv(91, 74%, 82%)
CMYK	cmyk(38.3%, 0%, 73.7%, 18%)
CIE-LAB	lab(76.40, -48.49, 64.35)
CIE-LCH	lch(76.40, 80.57, 127.00°)
OKLab	oklab(78.03% -0.1363 0.144)
OKLCH	oklch(78.03% 0.198 133.4)
XYZ	xyz(32.5428, 50.5423, 11.6547)
Luminance	0.5054 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81D137 #8737D1

analogous

#CED137 #81D137 #37D13A

triadic

#81D137 #3781D1 #D13781

tetradic

#81D137 #37CED1 #8737D1 #D13A37

square

#81D137 #37CED1 #8737D1 #D13A37

split-complementary

#81D137 #3A37D1 #D137CE

monochromatic

#45731A #63A526 #81D137 #A0DC69 #C0E89B

Accessibility & contrast

On white

1.89

#81D137 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.11

#81D137 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81D137

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81D137	#FFFFFF	#000000	##000000
##81D137	1.00	1.89	11.11	11.11
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.11	21.00	1.00	1.00
##000000	11.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D9C117

Deuteranopia (green-blind)

#CFBA46

Tritanopia (blue-blind)

#81C9B3

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #81d137;
/* rgb */ color: rgb(129, 209, 55);
/* oklch */ color: oklch(78.0% 0.198 133.4);

Tailwind

colors: {
  custom: {
    50: '#acdf78',
    500: '#81d137',
    950: '#000000',
  },
}

SCSS

$custom: #81d137;
$custom-light: #acdf78;
$custom-dark: #000000;

JSON

{
  "hex": "#81d137",
  "rgb": {
    "r": 129,
    "g": 209,
    "b": 55
  },
  "hsl": {
    "h": 91.169,
    "s": 62.602,
    "l": 51.765
  },
  "oklch": {
    "l": 0.7803,
    "c": 0.19828,
    "h": 133.4
  },
  "luminance": 0.50544
}

Semantic roles & 50–950 ramp

primary

#81D137

secondary

#58307C

accent

#42E697

background

#FDFEFB

surface

#F8FCF1

border

#D1D5CB

text

#11150A

muted

#81847D

Preview Lab

Preview with #81D137

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

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