#631F10#631F10

#631F10 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.4% C 0.102 H 34.0°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#631F10
RGB	rgb(99, 31, 16)
HSL	hsl(11, 72%, 23%)
HSV	hsv(11, 84%, 39%)
CMYK	cmyk(0%, 68.7%, 83.8%, 61.2%)
CIE-LAB	lab(22.55, 29.88, 26.05)
CIE-LCH	lch(22.55, 39.64, 41.09°)
OKLab	oklab(34.37% 0.0844 0.0568)
OKLCH	oklch(34.37% 0.102 34)
XYZ	xyz(5.7297, 3.6709, 0.8970)
Luminance	0.0367 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631F10 #105463

analogous

#63102B #631F10 #634810

triadic

#631F10 #10631F #1F1063

tetradic

#631F10 #2B6310 #105463 #481063

square

#631F10 #2B6310 #105463 #481063

split-complementary

#631F10 #106348 #102B63

monochromatic

#1A0804 #2E0F07 #631F10 #982F19 #CC4021

Accessibility & contrast

On white

12.11

#631F10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#631F10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631F10

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631F10	#FFFFFF	#000000	##FFFFFF
##631F10	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#322C0E

Deuteranopia (green-blind)

#433B0D

Tritanopia (blue-blind)

#6E0C1C

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #631f10;
/* rgb */ color: rgb(99, 31, 16);
/* oklch */ color: oklch(34.4% 0.102 34.0);

Tailwind

colors: {
  custom: {
    50: '#965e4f',
    500: '#631f10',
    950: '#000000',
  },
}

SCSS

$custom: #631f10;
$custom-light: #965e4f;
$custom-dark: #000000;

JSON

{
  "hex": "#631f10",
  "rgb": {
    "r": 99,
    "g": 31,
    "b": 16
  },
  "hsl": {
    "h": 10.843,
    "s": 72.174,
    "l": 22.549
  },
  "oklch": {
    "l": 0.34371,
    "c": 0.10171,
    "h": 34
  },
  "luminance": 0.0367
}

Semantic roles & 50–950 ramp

primary

#631F10

secondary

#33899C

accent

#CEEF39

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0502

muted

#7E7978

Preview Lab

Preview with #631F10

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

Preview Lab → · Contrast checker → · Palette generator →