#81B631#81B631

#81B631 is a light, vivid yellow-green. Relative luminance 0.383; OKLCH L 71.4% C 0.169 H 129.1°. Best body text is #000000 at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#81B631
RGB	rgb(129, 182, 49)
HSL	hsl(84, 58%, 45%)
HSV	hsv(84, 73%, 71%)
CMYK	cmyk(29.1%, 0%, 73.1%, 28.6%)
CIE-LAB	lab(68.27, -37.28, 58.44)
CIE-LCH	lch(68.27, 69.32, 122.54°)
OKLab	oklab(71.39% -0.1063 0.1308)
OKLCH	oklch(71.39% 0.169 129.1)
XYZ	xyz(26.3355, 38.3441, 8.9187)
Luminance	0.3835 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81B631 #6631B6

analogous

#B6A931 #81B631 #3EB631

triadic

#81B631 #3181B6 #B63181

tetradic

#81B631 #31B6A9 #6631B6 #B6313E

square

#81B631 #31B6A9 #6631B6 #B6313E

split-complementary

#81B631 #313EB6 #A931B6

monochromatic

#3D5617 #5F8624 #81B631 #9FD153 #BADE84

Accessibility & contrast

On white

2.42

#81B631 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.67

#81B631 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81B631

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81B631	#FFFFFF	#000000	##000000
##81B631	1.00	2.42	8.67	8.67
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.67	21.00	1.00	1.00
##000000	8.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFA918

Deuteranopia (green-blind)

#B7A53D

Tritanopia (blue-blind)

#85AE9C

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #81b631;
/* rgb */ color: rgb(129, 182, 49);
/* oklch */ color: oklch(71.4% 0.169 129.1);

Tailwind

colors: {
  custom: {
    50: '#aacc72',
    500: '#81b631',
    950: '#000000',
  },
}

SCSS

$custom: #81b631;
$custom-light: #aacc72;
$custom-dark: #000000;

JSON

{
  "hex": "#81b631",
  "rgb": {
    "r": 129,
    "g": 182,
    "b": 49
  },
  "hsl": {
    "h": 83.91,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.71389,
    "c": 0.16852,
    "h": 129.1
  },
  "luminance": 0.38345
}

Semantic roles & 50–950 ramp

primary

#81B631

secondary

#9A7CC7

accent

#47E184

background

#FAFCF7

surface

#F4F8ED

border

#CED1C8

text

#101308

muted

#7F827B

Preview Lab

Preview with #81B631

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

Preview Lab → · Contrast checker → · Palette generator →