#51881F#51881F

#51881F is a mid, vivid yellow-green. Relative luminance 0.195; OKLCH L 56.7% C 0.146 H 133.6°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#51881F
RGB	rgb(81, 136, 31)
HSL	hsl(91, 63%, 33%)
HSV	hsv(91, 77%, 53%)
CMYK	cmyk(40.4%, 0%, 77.2%, 46.7%)
CIE-LAB	lab(51.22, -35.83, 47.28)
CIE-LCH	lch(51.22, 59.33, 127.16°)
OKLab	oklab(56.75% -0.1007 0.1056)
OKLCH	oklch(56.75% 0.146 133.6)
XYZ	xyz(12.4446, 19.4560, 4.3957)
Luminance	0.1946 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51881F #561F88

analogous

#85881F #51881F #1F8822

triadic

#51881F #1F5188 #881F51

tetradic

#51881F #1F8588 #561F88 #88221F

square

#51881F #1F8588 #561F88 #88221F

split-complementary

#51881F #221F88 #881F85

monochromatic

#162408 #335614 #51881F #6FBA2A #8DD64B

Accessibility & contrast

On white

4.29

#51881F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#51881F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51881F

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51881F	#FFFFFF	#000000	##000000
##51881F	1.00	4.29	4.89	4.89
#FFFFFF	4.29	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)

#8E7D07

Deuteranopia (green-blind)

#86782A

Tritanopia (blue-blind)

#518274

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #51881f;
/* rgb */ color: rgb(81, 136, 31);
/* oklch */ color: oklch(56.7% 0.146 133.6);

Tailwind

colors: {
  custom: {
    50: '#87ab63',
    500: '#51881f',
    950: '#000000',
  },
}

SCSS

$custom: #51881f;
$custom-light: #87ab63;
$custom-dark: #000000;

JSON

{
  "hex": "#51881f",
  "rgb": {
    "r": 81,
    "g": 136,
    "b": 31
  },
  "hsl": {
    "h": 91.429,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.56745,
    "c": 0.14587,
    "h": 133.6
  },
  "luminance": 0.19457
}

Semantic roles & 50–950 ramp

primary

#51881F

secondary

#844AB9

accent

#42E698

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C1006

muted

#7D7F7A

Preview Lab

Preview with #51881F

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

Preview Lab → · Contrast checker → · Palette generator →