#51801C#51801C

#51801C is a mid, vivid yellow-green. Relative luminance 0.173; OKLCH L 54.6% C 0.137 H 132.0°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#51801C
RGB	rgb(81, 128, 28)
HSL	hsl(88, 64%, 31%)
HSV	hsv(88, 78%, 50%)
CMYK	cmyk(36.7%, 0%, 78.1%, 49.8%)
CIE-LAB	lab(48.60, -32.43, 45.82)
CIE-LCH	lch(48.60, 56.13, 125.29°)
OKLab	oklab(54.6% -0.0917 0.102)
OKLCH	oklch(54.6% 0.137 132)
XYZ	xyz(11.3220, 17.2711, 3.8355)
Luminance	0.1727 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51801C #4B1C80

analogous

#807D1C #51801C #1F801C

triadic

#51801C #1C5180 #801C51

tetradic

#51801C #1C807D #4B1C80 #801C1F

square

#51801C #1C807D #4B1C80 #801C1F

split-complementary

#51801C #1C1F80 #7D1C80

monochromatic

#111C06 #314E11 #51801C #71B227 #90D541

Accessibility & contrast

On white

4.71

#51801C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#51801C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51801C

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51801C	#FFFFFF	#000000	##FFFFFF
##51801C	1.00	4.71	4.45	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#867605

Deuteranopia (green-blind)

#7F7226

Tritanopia (blue-blind)

#527A6D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #51801c;
/* rgb */ color: rgb(81, 128, 28);
/* oklch */ color: oklch(54.6% 0.137 132.0);

Tailwind

colors: {
  custom: {
    50: '#86a560',
    500: '#51801c',
    950: '#000000',
  },
}

SCSS

$custom: #51801c;
$custom-light: #86a560;
$custom-dark: #000000;

JSON

{
  "hex": "#51801c",
  "rgb": {
    "r": 81,
    "g": 128,
    "b": 28
  },
  "hsl": {
    "h": 88.2,
    "s": 64.103,
    "l": 30.588
  },
  "oklch": {
    "l": 0.546,
    "c": 0.13717,
    "h": 132
  },
  "luminance": 0.17272
}

Semantic roles & 50–950 ramp

primary

#51801C

secondary

#7944B3

accent

#41E78F

background

#F8FAF5

surface

#F0F4EA

border

#CBCEC6

text

#0C0F05

muted

#7D7F79

Preview Lab

Preview with #51801C

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

Preview Lab → · Contrast checker → · Palette generator →