#51801D#51801D

#51801D 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	#51801D
RGB	rgb(81, 128, 29)
HSL	hsl(88, 63%, 31%)
HSV	hsv(88, 77%, 50%)
CMYK	cmyk(36.7%, 0%, 77.3%, 49.8%)
CIE-LAB	lab(48.61, -32.37, 45.46)
CIE-LCH	lch(48.61, 55.81, 125.45°)
OKLab	oklab(54.61% -0.0915 0.1014)
OKLCH	oklch(54.61% 0.137 132)
XYZ	xyz(11.3342, 17.2759, 3.8996)
Luminance	0.1728 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51801D #4C1D80

analogous

#807D1D #51801D #1F801D

triadic

#51801D #1D5180 #801D51

tetradic

#51801D #1D807D #4C1D80 #801D1F

square

#51801D #1D807D #4C1D80 #801D1F

split-complementary

#51801D #1D1F80 #7D1D80

monochromatic

#121C06 #314E12 #51801D #71B228 #8FD443

Accessibility & contrast

On white

4.71

#51801D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#51801D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51801D

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51801D	#FFFFFF	#000000	##FFFFFF
##51801D	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#867607

Deuteranopia (green-blind)

#7F7227

Tritanopia (blue-blind)

#527A6D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #51801d;
/* rgb */ color: rgb(81, 128, 29);
/* oklch */ color: oklch(54.6% 0.137 132.0);

Tailwind

colors: {
  custom: {
    50: '#86a561',
    500: '#51801d',
    950: '#000000',
  },
}

SCSS

$custom: #51801d;
$custom-light: #86a561;
$custom-dark: #000000;

JSON

{
  "hex": "#51801d",
  "rgb": {
    "r": 81,
    "g": 128,
    "b": 29
  },
  "hsl": {
    "h": 88.485,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.54607,
    "c": 0.13658,
    "h": 132
  },
  "luminance": 0.17276
}

Semantic roles & 50–950 ramp

primary

#51801D

secondary

#7A45B3

accent

#42E690

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C0F05

muted

#7D7F7A

Preview Lab

Preview with #51801D

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

Preview Lab → · Contrast checker → · Palette generator →