#81AA31#81AA31

#81AA31 is a light, vivid yellow-green. Relative luminance 0.336; OKLCH L 68.5% C 0.153 H 126.5°. Best body text is #000000 at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#81AA31
RGB	rgb(129, 170, 49)
HSL	hsl(80, 55%, 43%)
HSV	hsv(80, 71%, 67%)
CMYK	cmyk(24.1%, 0%, 71.2%, 33.3%)
CIE-LAB	lab(64.67, -31.78, 54.86)
CIE-LCH	lch(64.67, 63.40, 120.08°)
OKLab	oklab(68.47% -0.0913 0.1233)
OKLCH	oklch(68.47% 0.153 126.5)
XYZ	xyz(23.9824, 33.6379, 8.1344)
Luminance	0.3364 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81AA31 #5A31AA

analogous

#AA9731 #81AA31 #44AA31

triadic

#81AA31 #3181AA #AA3181

tetradic

#81AA31 #31AA97 #5A31AA #AA3144

square

#81AA31 #31AA97 #5A31AA #AA3144

split-complementary

#81AA31 #3144AA #9731AA

monochromatic

#394B16 #5D7A23 #81AA31 #A1CC4D #BAD97C

Accessibility & contrast

On white

2.72

#81AA31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.73

#81AA31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81AA31

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81AA31	#FFFFFF	#000000	##000000
##81AA31	1.00	2.72	7.73	7.73
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.73	21.00	1.00	1.00
##000000	7.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B39E1D

Deuteranopia (green-blind)

#AD9C3B

Tritanopia (blue-blind)

#86A292

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #81aa31;
/* rgb */ color: rgb(129, 170, 49);
/* oklch */ color: oklch(68.5% 0.153 126.5);

Tailwind

colors: {
  custom: {
    50: '#a9c371',
    500: '#81aa31',
    950: '#000000',
  },
}

SCSS

$custom: #81aa31;
$custom-light: #a9c371;
$custom-dark: #000000;

JSON

{
  "hex": "#81aa31",
  "rgb": {
    "r": 129,
    "g": 170,
    "b": 49
  },
  "hsl": {
    "h": 80.331,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.68467,
    "c": 0.15338,
    "h": 126.5
  },
  "luminance": 0.33638
}

Semantic roles & 50–950 ramp

primary

#81AA31

secondary

#8F75C2

accent

#49DF7C

background

#FAFCF7

surface

#F4F8ED

border

#CED1C8

text

#101208

muted

#7F817B

Preview Lab

Preview with #81AA31

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

Preview Lab → · Contrast checker → · Palette generator →