#631B0E#631B0E

#631B0E is a dark, moderate red. Relative luminance 0.035; OKLCH L 33.8% C 0.106 H 32.5°. Best body text is #FFFFFF at 12.40:1 contrast (WCAG AA passes).

Color values

HEX	#631B0E
RGB	rgb(99, 27, 14)
HSL	hsl(9, 75%, 22%)
HSV	hsv(9, 86%, 39%)
CMYK	cmyk(0%, 72.7%, 85.9%, 61.2%)
CIE-LAB	lab(21.83, 31.69, 26.35)
CIE-LCH	lch(21.83, 41.22, 39.75°)
OKLab	oklab(33.82% 0.0896 0.0571)
OKLCH	oklch(33.82% 0.106 32.5)
XYZ	xyz(5.6174, 3.4691, 0.7892)
Luminance	0.0347 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B0E #0E5663

analogous

#630E2C #631B0E #63450E

triadic

#631B0E #0E631B #1B0E63

tetradic

#631B0E #2C630E #0E5663 #450E63

square

#631B0E #2C630E #0E5663 #450E63

split-complementary

#631B0E #0E6345 #0E2C63

monochromatic

#1B0704 #2D0C06 #631B0E #992A16 #CE381D

Accessibility & contrast

On white

12.40

#631B0E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#631B0E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B0E

12.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B0E	#FFFFFF	#000000	##FFFFFF
##631B0E	1.00	12.40	1.69	12.40
#FFFFFF	12.40	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302A0C

Deuteranopia (green-blind)

#423A0B

Tritanopia (blue-blind)

#6E0419

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #631b0e;
/* rgb */ color: rgb(99, 27, 14);
/* oklch */ color: oklch(33.8% 0.106 32.5);

Tailwind

colors: {
  custom: {
    50: '#965c4e',
    500: '#631b0e',
    950: '#000000',
  },
}

SCSS

$custom: #631b0e;
$custom-light: #965c4e;
$custom-dark: #000000;

JSON

{
  "hex": "#631b0e",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 14
  },
  "hsl": {
    "h": 9.176,
    "s": 75.221,
    "l": 22.157
  },
  "oklch": {
    "l": 0.33824,
    "c": 0.10621,
    "h": 32.5
  },
  "luminance": 0.03468
}

Semantic roles & 50–950 ramp

primary

#631B0E

secondary

#308C9C

accent

#D5F236

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0401

muted

#7E7977

Preview Lab

Preview with #631B0E

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

Preview Lab → · Contrast checker → · Palette generator →