#51861B#51861B

#51861B is a mid, vivid yellow-green. Relative luminance 0.189; OKLCH L 56.2% C 0.146 H 133.0°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#51861B
RGB	rgb(81, 134, 27)
HSL	hsl(90, 66%, 32%)
HSV	hsv(90, 80%, 53%)
CMYK	cmyk(39.6%, 0%, 79.9%, 47.5%)
CIE-LAB	lab(50.54, -35.19, 48.01)
CIE-LCH	lch(50.54, 59.53, 126.24°)
OKLab	oklab(56.19% -0.0992 0.1065)
OKLCH	oklch(56.19% 0.146 133)
XYZ	xyz(12.1161, 18.8781, 4.0421)
Luminance	0.1888 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51861B #501B86

analogous

#86861B #51861B #1B861B

triadic

#51861B #1B5186 #861B51

tetradic

#51861B #1B8686 #501B86 #861B1B

square

#51861B #1B8686 #501B86 #861B1B

split-complementary

#51861B #1B1B86 #861B86

monochromatic

#132006 #325311 #51861B #70B925 #8ED942

Accessibility & contrast

On white

4.40

#51861B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#51861B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51861B

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51861B	#FFFFFF	#000000	##000000
##51861B	1.00	4.40	4.78	4.78
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C7B00

Deuteranopia (green-blind)

#857727

Tritanopia (blue-blind)

#518072

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #51861b;
/* rgb */ color: rgb(81, 134, 27);
/* oklch */ color: oklch(56.2% 0.146 133.0);

Tailwind

colors: {
  custom: {
    50: '#87a961',
    500: '#51861b',
    950: '#000000',
  },
}

SCSS

$custom: #51861b;
$custom-light: #87a961;
$custom-dark: #000000;

JSON

{
  "hex": "#51861b",
  "rgb": {
    "r": 81,
    "g": 134,
    "b": 27
  },
  "hsl": {
    "h": 89.72,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.56187,
    "c": 0.14553,
    "h": 133
  },
  "luminance": 0.18879
}

Semantic roles & 50–950 ramp

primary

#51861B

secondary

#7E44B9

accent

#3EE993

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C1005

muted

#7D7F7A

Preview Lab

Preview with #51861B

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

Preview Lab → · Contrast checker → · Palette generator →