#51831F#51831F

#51831F is a mid, vivid yellow-green. Relative luminance 0.181; OKLCH L 55.4% C 0.139 H 132.8°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#51831F
RGB	rgb(81, 131, 31)
HSL	hsl(90, 62%, 32%)
HSV	hsv(90, 76%, 51%)
CMYK	cmyk(38.2%, 0%, 76.3%, 48.6%)
CIE-LAB	lab(49.59, -33.60, 45.70)
CIE-LCH	lch(49.59, 56.72, 126.33°)
OKLab	oklab(55.42% -0.0946 0.1022)
OKLCH	oklch(55.42% 0.139 132.8)
XYZ	xyz(11.7568, 18.0803, 4.1665)
Luminance	0.1808 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51831F #511F83

analogous

#83831F #51831F #1F831F

triadic

#51831F #1F5183 #831F51

tetradic

#51831F #1F8383 #511F83 #831F1F

square

#51831F #1F8383 #511F83 #831F1F

split-complementary

#51831F #1F1F83 #831F83

monochromatic

#142008 #325213 #51831F #70B42B #8ED449

Accessibility & contrast

On white

4.55

#51831F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#51831F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51831F

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51831F	#FFFFFF	#000000	##000000
##51831F	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#89780A

Deuteranopia (green-blind)

#827529

Tritanopia (blue-blind)

#527D70

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #51831f;
/* rgb */ color: rgb(81, 131, 31);
/* oklch */ color: oklch(55.4% 0.139 132.8);

Tailwind

colors: {
  custom: {
    50: '#86a762',
    500: '#51831f',
    950: '#000000',
  },
}

SCSS

$custom: #51831f;
$custom-light: #86a762;
$custom-dark: #000000;

JSON

{
  "hex": "#51831f",
  "rgb": {
    "r": 81,
    "g": 131,
    "b": 31
  },
  "hsl": {
    "h": 90,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.55418,
    "c": 0.13933,
    "h": 132.8
  },
  "luminance": 0.18081
}

Semantic roles & 50–950 ramp

primary

#51831F

secondary

#7F48B6

accent

#43E594

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C0F05

muted

#7D7F7A

Preview Lab

Preview with #51831F

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

Preview Lab → · Contrast checker → · Palette generator →