#631F11#631F11

#631F11 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.4% C 0.101 H 33.4°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#631F11
RGB	rgb(99, 31, 17)
HSL	hsl(10, 71%, 23%)
HSV	hsv(10, 83%, 39%)
CMYK	cmyk(0%, 68.7%, 82.8%, 61.2%)
CIE-LAB	lab(22.56, 29.92, 25.50)
CIE-LCH	lch(22.56, 39.31, 40.44°)
OKLab	oklab(34.38% 0.0847 0.0559)
OKLCH	oklch(34.38% 0.101 33.4)
XYZ	xyz(5.7374, 3.6739, 0.9372)
Luminance	0.0367 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631F11 #115563

analogous

#63112C #631F11 #634811

triadic

#631F11 #11631F #1F1163

tetradic

#631F11 #2C6311 #115563 #481163

square

#631F11 #2C6311 #115563 #481163

split-complementary

#631F11 #116348 #112C63

monochromatic

#1A0804 #2F0F08 #631F11 #972F1A #CB4023

Accessibility & contrast

On white

12.11

#631F11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#631F11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631F11

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631F11	#FFFFFF	#000000	##FFFFFF
##631F11	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)

#322C0F

Deuteranopia (green-blind)

#433B0E

Tritanopia (blue-blind)

#6E0C1C

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #631f11;
/* rgb */ color: rgb(99, 31, 17);
/* oklch */ color: oklch(34.4% 0.101 33.4);

Tailwind

colors: {
  custom: {
    50: '#965e50',
    500: '#631f11',
    950: '#000000',
  },
}

SCSS

$custom: #631f11;
$custom-light: #965e50;
$custom-dark: #000000;

JSON

{
  "hex": "#631f11",
  "rgb": {
    "r": 99,
    "g": 31,
    "b": 17
  },
  "hsl": {
    "h": 10.244,
    "s": 70.69,
    "l": 22.745
  },
  "oklch": {
    "l": 0.34383,
    "c": 0.10148,
    "h": 33.4
  },
  "luminance": 0.03673
}

Semantic roles & 50–950 ramp

primary

#631F11

secondary

#348A9B

accent

#CFED3A

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0502

muted

#7E7978

Preview Lab

Preview with #631F11

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

Preview Lab → · Contrast checker → · Palette generator →