#31591B#31591B

#31591B is a dark, moderate yellow-green. Relative luminance 0.079; OKLCH L 42.0% C 0.102 H 136.3°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#31591B
RGB	rgb(49, 89, 27)
HSL	hsl(99, 53%, 23%)
HSV	hsv(99, 70%, 35%)
CMYK	cmyk(44.9%, 0%, 69.7%, 65.1%)
CIE-LAB	lab(33.72, -26.53, 30.51)
CIE-LCH	lch(33.72, 40.43, 131.00°)
OKLab	oklab(41.97% -0.0735 0.0703)
OKLCH	oklch(41.97% 0.102 136.3)
XYZ	xyz(5.0367, 7.8766, 2.2916)
Luminance	0.0788 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31591B #431B59

analogous

#50591B #31591B #1B5924

triadic

#31591B #1B3159 #591B31

tetradic

#31591B #1B5059 #431B59 #59241B

square

#31591B #1B5059 #431B59 #59241B

split-complementary

#31591B #241B59 #591B50

monochromatic

#0D1707 #172A0D #31591B #4B8829 #65B737

Accessibility & contrast

On white

8.15

#31591B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#31591B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31591B

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31591B	#FFFFFF	#000000	##FFFFFF
##31591B	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5113

Deuteranopia (green-blind)

#574E20

Tritanopia (blue-blind)

#2F564C

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #31591b;
/* rgb */ color: rgb(49, 89, 27);
/* oklch */ color: oklch(42.0% 0.102 136.3);

Tailwind

colors: {
  custom: {
    50: '#6d885b',
    500: '#31591b',
    950: '#000000',
  },
}

SCSS

$custom: #31591b;
$custom-light: #6d885b;
$custom-dark: #000000;

JSON

{
  "hex": "#31591b",
  "rgb": {
    "r": 49,
    "g": 89,
    "b": 27
  },
  "hsl": {
    "h": 98.71,
    "s": 53.448,
    "l": 22.745
  },
  "oklch": {
    "l": 0.41973,
    "c": 0.10175,
    "h": 136.3
  },
  "luminance": 0.07877
}

Semantic roles & 50–950 ramp

primary

#31591B

secondary

#73418F

accent

#4BDDA9

background

#F6F8F5

surface

#ECF0E9

border

#C7CBC5

text

#070B04

muted

#7A7C79

Preview Lab

Preview with #31591B

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

Preview Lab → · Contrast checker → · Palette generator →