#51981B#51981B

#51981B is a mid, vivid yellow-green. Relative luminance 0.243; OKLCH L 61.0% C 0.168 H 135.5°. Best body text is #000000 at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#51981B
RGB	rgb(81, 152, 27)
HSL	hsl(94, 70%, 35%)
HSV	hsv(94, 82%, 60%)
CMYK	cmyk(46.7%, 0%, 82.2%, 40.4%)
CIE-LAB	lab(56.37, -42.83, 53.43)
CIE-LCH	lch(56.37, 68.48, 128.72°)
OKLab	oklab(60.97% -0.1198 0.1178)
OKLCH	oklch(60.97% 0.168 135.5)
XYZ	xyz(14.8191, 24.2840, 4.9431)
Luminance	0.2429 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51981B #621B98

analogous

#8F981B #51981B #1B9824

triadic

#51981B #1B5198 #981B51

tetradic

#51981B #1B8F98 #621B98 #98241B

square

#51981B #1B8F98 #621B98 #98241B

split-complementary

#51981B #241B98 #981B8F

monochromatic

#1A3009 #356412 #51981B #6DCC24 #8DE04E

Accessibility & contrast

On white

3.59

#51981B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.86

#51981B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51981B

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51981B	#FFFFFF	#000000	##000000
##51981B	1.00	3.59	5.86	5.86
#FFFFFF	3.59	1.00	21.00	21.00
#000000	5.86	21.00	1.00	1.00
##000000	5.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9E8B00

Deuteranopia (green-blind)

#94852A

Tritanopia (blue-blind)

#4F9281

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #51981b;
/* rgb */ color: rgb(81, 152, 27);
/* oklch */ color: oklch(61.0% 0.168 135.5);

Tailwind

colors: {
  custom: {
    50: '#89b763',
    500: '#51981b',
    950: '#000000',
  },
}

SCSS

$custom: #51981b;
$custom-light: #89b763;
$custom-dark: #000000;

JSON

{
  "hex": "#51981b",
  "rgb": {
    "r": 81,
    "g": 152,
    "b": 27
  },
  "hsl": {
    "h": 94.08,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.60965,
    "c": 0.16802,
    "h": 135.5
  },
  "luminance": 0.24285
}

Semantic roles & 50–950 ramp

primary

#51981B

secondary

#8F4DC2

accent

#3BEDA0

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1106

muted

#7D807A

Preview Lab

Preview with #51981B

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

Preview Lab → · Contrast checker → · Palette generator →