#81B533#81B533

#81B533 is a light, vivid yellow-green. Relative luminance 0.380; OKLCH L 71.2% C 0.166 H 129.0°. Best body text is #000000 at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#81B533
RGB	rgb(129, 181, 51)
HSL	hsl(84, 56%, 45%)
HSV	hsv(84, 72%, 71%)
CMYK	cmyk(28.7%, 0%, 71.8%, 29%)
CIE-LAB	lab(67.99, -36.71, 57.43)
CIE-LCH	lch(67.99, 68.16, 122.59°)
OKLab	oklab(71.16% -0.1046 0.129)
OKLCH	oklch(71.16% 0.166 129)
XYZ	xyz(26.1746, 37.9532, 9.0780)
Luminance	0.3795 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81B533 #6733B5

analogous

#B5A833 #81B533 #40B533

triadic

#81B533 #3381B5 #B53381

tetradic

#81B533 #33B5A8 #6733B5 #B53340

square

#81B533 #33B5A8 #6733B5 #B53340

split-complementary

#81B533 #3340B5 #A833B5

monochromatic

#3D5618 #5F8526 #81B533 #9FCF56 #BADD86

Accessibility & contrast

On white

2.44

#81B533 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.59

#81B533 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81B533

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81B533	#FFFFFF	#000000	##000000
##81B533	1.00	2.44	8.59	8.59
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.59	21.00	1.00	1.00
##000000	8.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BEA81C

Deuteranopia (green-blind)

#B7A53F

Tritanopia (blue-blind)

#85AD9C

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #81b533;
/* rgb */ color: rgb(129, 181, 51);
/* oklch */ color: oklch(71.2% 0.166 129.0);

Tailwind

colors: {
  custom: {
    50: '#aacb73',
    500: '#81b533',
    950: '#000000',
  },
}

SCSS

$custom: #81b533;
$custom-light: #aacb73;
$custom-dark: #000000;

JSON

{
  "hex": "#81b533",
  "rgb": {
    "r": 129,
    "g": 181,
    "b": 51
  },
  "hsl": {
    "h": 84,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.7116,
    "c": 0.16603,
    "h": 129
  },
  "luminance": 0.37954
}

Semantic roles & 50–950 ramp

primary

#81B533

secondary

#9B7DC6

accent

#48DF85

background

#FAFCF7

surface

#F4F8ED

border

#CED1C8

text

#101309

muted

#7F827B

Preview Lab

Preview with #81B533

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

Preview Lab → · Contrast checker → · Palette generator →