#51841B#51841B

#51841B is a mid, vivid yellow-green. Relative luminance 0.183; OKLCH L 55.7% C 0.143 H 132.6°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#51841B
RGB	rgb(81, 132, 27)
HSL	hsl(89, 66%, 31%)
HSV	hsv(89, 80%, 52%)
CMYK	cmyk(38.6%, 0%, 79.5%, 48.2%)
CIE-LAB	lab(49.89, -34.30, 47.40)
CIE-LCH	lch(49.89, 58.51, 125.89°)
OKLab	oklab(55.66% -0.0968 0.1052)
OKLCH	oklch(55.66% 0.143 132.6)
XYZ	xyz(11.8423, 18.3305, 3.9509)
Luminance	0.1833 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51841B #4E1B84

analogous

#84821B #51841B #1C841B

triadic

#51841B #1B5184 #841B51

tetradic

#51841B #1B8482 #4E1B84 #841B1C

square

#51841B #1B8482 #4E1B84 #841B1C

split-complementary

#51841B #1B1C84 #821B84

monochromatic

#131E06 #325111 #51841B #70B725 #8FD841

Accessibility & contrast

On white

4.50

#51841B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#51841B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51841B

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51841B	#FFFFFF	#000000	##000000
##51841B	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A7900

Deuteranopia (green-blind)

#837526

Tritanopia (blue-blind)

#527E70

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #51841b;
/* rgb */ color: rgb(81, 132, 27);
/* oklch */ color: oklch(55.7% 0.143 132.6);

Tailwind

colors: {
  custom: {
    50: '#87a861',
    500: '#51841b',
    950: '#000000',
  },
}

SCSS

$custom: #51841b;
$custom-light: #87a861;
$custom-dark: #000000;

JSON

{
  "hex": "#51841b",
  "rgb": {
    "r": 81,
    "g": 132,
    "b": 27
  },
  "hsl": {
    "h": 89.143,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.55656,
    "c": 0.14295,
    "h": 132.6
  },
  "luminance": 0.18331
}

Semantic roles & 50–950 ramp

primary

#51841B

secondary

#7C43B7

accent

#3FE991

background

#F8FAF5

surface

#F0F4EA

border

#CBCEC6

text

#0C0F05

muted

#7D7F79

Preview Lab

Preview with #51841B

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

Preview Lab → · Contrast checker → · Palette generator →