#81AC37#81AC37

#81AC37 is a light, vivid yellow-green. Relative luminance 0.344; OKLCH L 69.0% C 0.152 H 127.4°. Best body text is #000000 at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#81AC37
RGB	rgb(129, 172, 55)
HSL	hsl(82, 52%, 45%)
HSV	hsv(82, 68%, 67%)
CMYK	cmyk(25%, 0%, 68%, 32.5%)
CIE-LAB	lab(65.32, -32.31, 53.17)
CIE-LCH	lch(65.32, 62.22, 121.29°)
OKLab	oklab(69% -0.0922 0.1206)
OKLCH	oklch(69% 0.152 127.4)
XYZ	xyz(24.4954, 34.4475, 8.9722)
Luminance	0.3445 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81AC37 #6237AC

analogous

#AC9D37 #81AC37 #47AC37

triadic

#81AC37 #3781AC #AC3781

tetradic

#81AC37 #37AC9D #6237AC #AC3747

square

#81AC37 #37AC9D #6237AC #AC3747

split-complementary

#81AC37 #3747AC #9D37AC

monochromatic

#3B4F19 #5E7E28 #81AC37 #9FC957 #BAD885

Accessibility & contrast

On white

2.66

#81AC37 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.89

#81AC37 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81AC37

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81AC37	#FFFFFF	#000000	##000000
##81AC37	1.00	2.66	7.89	7.89
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.89	21.00	1.00	1.00
##000000	7.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5A026

Deuteranopia (green-blind)

#AF9E41

Tritanopia (blue-blind)

#86A494

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #81ac37;
/* rgb */ color: rgb(129, 172, 55);
/* oklch */ color: oklch(69.0% 0.152 127.4);

Tailwind

colors: {
  custom: {
    50: '#a9c574',
    500: '#81ac37',
    950: '#000000',
  },
}

SCSS

$custom: #81ac37;
$custom-light: #a9c574;
$custom-dark: #000000;

JSON

{
  "hex": "#81ac37",
  "rgb": {
    "r": 129,
    "g": 172,
    "b": 55
  },
  "hsl": {
    "h": 82.051,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.69001,
    "c": 0.15182,
    "h": 127.4
  },
  "luminance": 0.34448
}

Semantic roles & 50–950 ramp

primary

#81AC37

secondary

#967DC2

accent

#4DDB81

background

#FAFCF7

surface

#F4F8ED

border

#CED1C8

text

#101209

muted

#7F817B

Preview Lab

Preview with #81AC37

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

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