#51631B#51631B

#51631B is a mid, moderate yellow-green. Relative luminance 0.108; OKLCH L 46.9% C 0.098 H 122.4°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#51631B
RGB	rgb(81, 99, 27)
HSL	hsl(75, 57%, 25%)
HSV	hsv(75, 73%, 39%)
CMYK	cmyk(18.2%, 0%, 72.7%, 61.2%)
CIE-LAB	lab(39.16, -18.15, 36.87)
CIE-LCH	lch(39.16, 41.10, 116.21°)
OKLab	oklab(46.93% -0.0528 0.0831)
OKLCH	oklch(46.93% 0.098 122.4)
XYZ	xyz(8.0531, 10.7521, 2.6878)
Luminance	0.1075 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51631B #2D1B63

analogous

#63511B #51631B #2D631B

triadic

#51631B #1B5163 #631B51

tetradic

#51631B #1B6351 #2D1B63 #631B2D

square

#51631B #1B6351 #2D1B63 #631B2D

split-complementary

#51631B #1B2D63 #511B63

monochromatic

#141807 #2A330E #51631B #789328 #A0C335

Accessibility & contrast

On white

6.67

#51631B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#51631B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51631B

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51631B	#FFFFFF	#000000	##FFFFFF
##51631B	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#695D10

Deuteranopia (green-blind)

#675C21

Tritanopia (blue-blind)

#555E55

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #51631b;
/* rgb */ color: rgb(81, 99, 27);
/* oklch */ color: oklch(46.9% 0.098 122.4);

Tailwind

colors: {
  custom: {
    50: '#848f5c',
    500: '#51631b',
    950: '#000000',
  },
}

SCSS

$custom: #51631b;
$custom-light: #848f5c;
$custom-dark: #000000;

JSON

{
  "hex": "#51631b",
  "rgb": {
    "r": 81,
    "g": 99,
    "b": 27
  },
  "hsl": {
    "h": 75,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.46931,
    "c": 0.09845,
    "h": 122.4
  },
  "luminance": 0.10752
}

Semantic roles & 50–950 ramp

primary

#51631B

secondary

#574198

accent

#47E06E

background

#F8F8F5

surface

#EFF0E9

border

#CACBC5

text

#0B0C04

muted

#7C7D79

Preview Lab

Preview with #51631B

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

Preview Lab → · Contrast checker → · Palette generator →