#51871F#51871F

#51871F is a mid, vivid yellow-green. Relative luminance 0.192; OKLCH L 56.5% C 0.145 H 133.5°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#51871F
RGB	rgb(81, 135, 31)
HSL	hsl(91, 63%, 33%)
HSV	hsv(91, 77%, 53%)
CMYK	cmyk(40%, 0%, 77%, 47.1%)
CIE-LAB	lab(50.89, -35.39, 46.97)
CIE-LCH	lch(50.89, 58.81, 127.00°)
OKLab	oklab(56.48% -0.0995 0.1049)
OKLCH	oklch(56.48% 0.145 133.5)
XYZ	xyz(12.3044, 19.1756, 4.3490)
Luminance	0.1918 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51871F #551F87

analogous

#85871F #51871F #1F8721

triadic

#51871F #1F5187 #871F51

tetradic

#51871F #1F8587 #551F87 #87211F

square

#51871F #1F8587 #551F87 #87211F

split-complementary

#51871F #211F87 #871F85

monochromatic

#152308 #335514 #51871F #6FB92A #8ED64B

Accessibility & contrast

On white

4.34

#51871F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#51871F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51871F

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51871F	#FFFFFF	#000000	##000000
##51871F	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D7C08

Deuteranopia (green-blind)

#85782A

Tritanopia (blue-blind)

#518173

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #51871f;
/* rgb */ color: rgb(81, 135, 31);
/* oklch */ color: oklch(56.5% 0.145 133.5);

Tailwind

colors: {
  custom: {
    50: '#87aa63',
    500: '#51871f',
    950: '#000000',
  },
}

SCSS

$custom: #51871f;
$custom-light: #87aa63;
$custom-dark: #000000;

JSON

{
  "hex": "#51871f",
  "rgb": {
    "r": 81,
    "g": 135,
    "b": 31
  },
  "hsl": {
    "h": 91.154,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.56479,
    "c": 0.14458,
    "h": 133.5
  },
  "luminance": 0.19176
}

Semantic roles & 50–950 ramp

primary

#51871F

secondary

#834AB8

accent

#42E697

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C1006

muted

#7D7F7A

Preview Lab

Preview with #51871F

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

Preview Lab → · Contrast checker → · Palette generator →