#81B128#81B128

#81B128 is a light, vivid yellow-green. Relative luminance 0.363; OKLCH L 70.1% C 0.167 H 127.6°. Best body text is #000000 at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#81B128
RGB	rgb(129, 177, 40)
HSL	hsl(81, 63%, 43%)
HSV	hsv(81, 77%, 69%)
CMYK	cmyk(27.1%, 0%, 77.4%, 30.6%)
CIE-LAB	lab(66.72, -35.52, 59.98)
CIE-LCH	lch(66.72, 69.71, 120.63°)
OKLab	oklab(70.11% -0.1022 0.1326)
OKLCH	oklch(70.11% 0.167 127.6)
XYZ	xyz(25.1585, 36.2641, 7.6812)
Luminance	0.3626 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81B128 #5828B1

analogous

#B19D28 #81B128 #3CB128

triadic

#81B128 #2881B1 #B12881

tetradic

#81B128 #28B19D #5828B1 #B1283C

square

#81B128 #28B19D #5828B1 #B1283C

split-complementary

#81B128 #283CB1 #9D28B1

monochromatic

#384D11 #5D7F1D #81B128 #A1D442 #BAE074

Accessibility & contrast

On white

2.54

#81B128 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.25

#81B128 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81B128

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81B128	#FFFFFF	#000000	##000000
##81B128	1.00	2.54	8.25	8.25
#FFFFFF	2.54	1.00	21.00	21.00
#000000	8.25	21.00	1.00	1.00
##000000	8.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAA401

Deuteranopia (green-blind)

#B4A136

Tritanopia (blue-blind)

#86A997

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #81b128;
/* rgb */ color: rgb(129, 177, 40);
/* oklch */ color: oklch(70.1% 0.167 127.6);

Tailwind

colors: {
  custom: {
    50: '#aac86d',
    500: '#81b128',
    950: '#000000',
  },
}

SCSS

$custom: #81b128;
$custom-light: #aac86d;
$custom-dark: #000000;

JSON

{
  "hex": "#81b128",
  "rgb": {
    "r": 129,
    "g": 177,
    "b": 40
  },
  "hsl": {
    "h": 81.022,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.70111,
    "c": 0.16741,
    "h": 127.6
  },
  "luminance": 0.36265
}

Semantic roles & 50–950 ramp

primary

#81B128

secondary

#8D6EC7

accent

#42E67B

background

#FAFCF6

surface

#F4F8EC

border

#CED1C7

text

#101308

muted

#7F827B

Preview Lab

Preview with #81B128

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

Preview Lab → · Contrast checker → · Palette generator →