#81B231#81B231

#81B231 is a light, vivid yellow-green. Relative luminance 0.367; OKLCH L 70.4% C 0.164 H 128.3°. Best body text is #000000 at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#81B231
RGB	rgb(129, 178, 49)
HSL	hsl(83, 57%, 45%)
HSV	hsv(83, 72%, 70%)
CMYK	cmyk(27.5%, 0%, 72.5%, 30.2%)
CIE-LAB	lab(67.07, -35.48, 57.25)
CIE-LCH	lch(67.07, 67.35, 121.78°)
OKLab	oklab(70.41% -0.1014 0.1283)
OKLCH	oklch(70.41% 0.164 128.3)
XYZ	xyz(25.5280, 36.7291, 8.6496)
Luminance	0.3673 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81B231 #6231B2

analogous

#B2A331 #81B231 #40B231

triadic

#81B231 #3181B2 #B23181

tetradic

#81B231 #31B2A3 #6231B2 #B23140

square

#81B231 #31B2A3 #6231B2 #B23140

split-complementary

#81B231 #3140B2 #A331B2

monochromatic

#3B5217 #5E8224 #81B231 #9FCF51 #BADC81

Accessibility & contrast

On white

2.52

#81B231 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.35

#81B231 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81B231

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81B231	#FFFFFF	#000000	##000000
##81B231	1.00	2.52	8.35	8.35
#FFFFFF	2.52	1.00	21.00	21.00
#000000	8.35	21.00	1.00	1.00
##000000	8.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA51A

Deuteranopia (green-blind)

#B4A23D

Tritanopia (blue-blind)

#85AA99

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #81b231;
/* rgb */ color: rgb(129, 178, 49);
/* oklch */ color: oklch(70.4% 0.164 128.3);

Tailwind

colors: {
  custom: {
    50: '#a9c972',
    500: '#81b231',
    950: '#000000',
  },
}

SCSS

$custom: #81b231;
$custom-light: #a9c972;
$custom-dark: #000000;

JSON

{
  "hex": "#81b231",
  "rgb": {
    "r": 129,
    "g": 178,
    "b": 49
  },
  "hsl": {
    "h": 82.791,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.70414,
    "c": 0.16351,
    "h": 128.3
  },
  "luminance": 0.3673
}

Semantic roles & 50–950 ramp

primary

#81B231

secondary

#9679C5

accent

#48E082

background

#FAFCF7

surface

#F4F8ED

border

#CED1C8

text

#101308

muted

#7F827B

Preview Lab

Preview with #81B231

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

Preview Lab → · Contrast checker → · Palette generator →