#51881C#51881C

#51881C is a mid, vivid yellow-green. Relative luminance 0.194; OKLCH L 56.7% C 0.148 H 133.4°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#51881C
RGB	rgb(81, 136, 28)
HSL	hsl(91, 66%, 32%)
HSV	hsv(91, 79%, 53%)
CMYK	cmyk(40.4%, 0%, 79.4%, 46.7%)
CIE-LAB	lab(51.20, -36.01, 48.30)
CIE-LCH	lch(51.20, 60.25, 126.71°)
OKLab	oklab(56.73% -0.1014 0.1072)
OKLCH	oklch(56.73% 0.148 133.4)
XYZ	xyz(12.4069, 19.4409, 4.1971)
Luminance	0.1944 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51881C #531C88

analogous

#87881C #51881C #1C881D

triadic

#51881C #1C5188 #881C51

tetradic

#51881C #1C8788 #531C88 #881D1C

square

#51881C #1C8788 #531C88 #881D1C

split-complementary

#51881C #1D1C88 #881C87

monochromatic

#152207 #335512 #51881C #6FBB26 #8ED946

Accessibility & contrast

On white

4.30

#51881C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#51881C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51881C

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51881C	#FFFFFF	#000000	##000000
##51881C	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8E7D00

Deuteranopia (green-blind)

#867828

Tritanopia (blue-blind)

#518274

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #51881c;
/* rgb */ color: rgb(81, 136, 28);
/* oklch */ color: oklch(56.7% 0.148 133.4);

Tailwind

colors: {
  custom: {
    50: '#87ab62',
    500: '#51881c',
    950: '#000000',
  },
}

SCSS

$custom: #51881c;
$custom-light: #87ab62;
$custom-dark: #000000;

JSON

{
  "hex": "#51881c",
  "rgb": {
    "r": 81,
    "g": 136,
    "b": 28
  },
  "hsl": {
    "h": 90.556,
    "s": 65.854,
    "l": 32.157
  },
  "oklch": {
    "l": 0.56725,
    "c": 0.14756,
    "h": 133.4
  },
  "luminance": 0.19441
}

Semantic roles & 50–950 ramp

primary

#51881C

secondary

#8145BA

accent

#3FE995

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C1005

muted

#7D7F7A

Preview Lab

Preview with #51881C

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

Preview Lab → · Contrast checker → · Palette generator →