#81B433#81B433

#81B433 is a light, vivid yellow-green. Relative luminance 0.375; OKLCH L 70.9% C 0.165 H 128.9°. Best body text is #000000 at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#81B433
RGB	rgb(129, 180, 51)
HSL	hsl(84, 56%, 45%)
HSV	hsv(84, 72%, 71%)
CMYK	cmyk(28.3%, 0%, 71.7%, 29.4%)
CIE-LAB	lab(67.69, -36.26, 57.13)
CIE-LCH	lch(67.69, 67.67, 122.40°)
OKLab	oklab(70.92% -0.1034 0.1283)
OKLCH	oklch(70.92% 0.165 128.9)
XYZ	xyz(25.9720, 37.5480, 9.0104)
Luminance	0.3755 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81B433 #6633B4

analogous

#B4A633 #81B433 #40B433

triadic

#81B433 #3381B4 #B43381

tetradic

#81B433 #33B4A6 #6633B4 #B43340

square

#81B433 #33B4A6 #6633B4 #B43340

split-complementary

#81B433 #3340B4 #A633B4

monochromatic

#3D5518 #5F8425 #81B433 #9FCF55 #BADC85

Accessibility & contrast

On white

2.47

#81B433 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.51

#81B433 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81B433

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81B433	#FFFFFF	#000000	##000000
##81B433	1.00	2.47	8.51	8.51
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.51	21.00	1.00	1.00
##000000	8.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDA71D

Deuteranopia (green-blind)

#B6A43F

Tritanopia (blue-blind)

#85AC9B

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #81b433;
/* rgb */ color: rgb(129, 180, 51);
/* oklch */ color: oklch(70.9% 0.165 128.9);

Tailwind

colors: {
  custom: {
    50: '#aaca73',
    500: '#81b433',
    950: '#000000',
  },
}

SCSS

$custom: #81b433;
$custom-light: #aaca73;
$custom-dark: #000000;

JSON

{
  "hex": "#81b433",
  "rgb": {
    "r": 129,
    "g": 180,
    "b": 51
  },
  "hsl": {
    "h": 83.721,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.70916,
    "c": 0.16477,
    "h": 128.9
  },
  "luminance": 0.37549
}

Semantic roles & 50–950 ramp

primary

#81B433

secondary

#9A7DC6

accent

#49DF84

background

#FAFCF7

surface

#F4F8ED

border

#CED1C8

text

#101308

muted

#7F827B

Preview Lab

Preview with #81B433

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

Preview Lab → · Contrast checker → · Palette generator →