#51721C#51721C

#51721C is a mid, moderate yellow-green. Relative luminance 0.139; OKLCH L 50.9% C 0.118 H 128.5°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#51721C
RGB	rgb(81, 114, 28)
HSL	hsl(83, 61%, 28%)
HSV	hsv(83, 75%, 45%)
CMYK	cmyk(28.9%, 0%, 75.4%, 55.3%)
CIE-LAB	lab(44.04, -25.79, 41.37)
CIE-LCH	lch(44.04, 48.75, 121.94°)
OKLab	oklab(50.89% -0.0737 0.0927)
OKLCH	oklch(50.89% 0.118 128.5)
XYZ	xyz(9.6202, 13.8676, 3.2682)
Luminance	0.1387 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51721C #3D1C72

analogous

#72681C #51721C #26721C

triadic

#51721C #1C5172 #721C51

tetradic

#51721C #1C7268 #3D1C72 #721C26

square

#51721C #1C7268 #3D1C72 #721C26

split-complementary

#51721C #1C2672 #681C72

monochromatic

#111906 #2E4110 #51721C #74A328 #95CF3A

Accessibility & contrast

On white

5.56

#51721C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#51721C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51721C

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51721C	#FFFFFF	#000000	##FFFFFF
##51721C	1.00	5.56	3.77	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#786A0C

Deuteranopia (green-blind)

#736724

Tritanopia (blue-blind)

#546D61

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #51721c;
/* rgb */ color: rgb(81, 114, 28);
/* oklch */ color: oklch(50.9% 0.118 128.5);

Tailwind

colors: {
  custom: {
    50: '#859a5f',
    500: '#51721c',
    950: '#000000',
  },
}

SCSS

$custom: #51721c;
$custom-light: #859a5f;
$custom-dark: #000000;

JSON

{
  "hex": "#51721c",
  "rgb": {
    "r": 81,
    "g": 114,
    "b": 28
  },
  "hsl": {
    "h": 83.023,
    "s": 60.563,
    "l": 27.843
  },
  "oklch": {
    "l": 0.50888,
    "c": 0.11839,
    "h": 128.5
  },
  "luminance": 0.13868
}

Semantic roles & 50–950 ramp

primary

#51721C

secondary

#6943A6

accent

#44E481

background

#F8F9F5

surface

#EFF2E9

border

#CACCC5

text

#0B0E05

muted

#7C7E79

Preview Lab

Preview with #51721C

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

Preview Lab → · Contrast checker → · Palette generator →