#631C0F#631C0F

#631C0F is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.0% C 0.105 H 32.6°. Best body text is #FFFFFF at 12.33:1 contrast (WCAG AA passes).

Color values

HEX	#631C0F
RGB	rgb(99, 28, 15)
HSL	hsl(9, 74%, 22%)
HSV	hsv(9, 85%, 39%)
CMYK	cmyk(0%, 71.7%, 84.8%, 61.2%)
CIE-LAB	lab(22.01, 31.27, 26.03)
CIE-LCH	lch(22.01, 40.68, 39.77°)
OKLab	oklab(33.96% 0.0885 0.0566)
OKLCH	oklch(33.96% 0.105 32.6)
XYZ	xyz(5.6477, 3.5185, 0.8336)
Luminance	0.0352 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631C0F #0F5663

analogous

#630F2C #631C0F #63460F

triadic

#631C0F #0F631C #1C0F63

tetradic

#631C0F #2C630F #0F5663 #460F63

square

#631C0F #2C630F #0F5663 #460F63

split-complementary

#631C0F #0F6346 #0F2C63

monochromatic

#1B0804 #2E0D07 #631C0F #982B17 #CD3A1F

Accessibility & contrast

On white

12.33

#631C0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#631C0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631C0F

12.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631C0F	#FFFFFF	#000000	##FFFFFF
##631C0F	1.00	12.33	1.70	12.33
#FFFFFF	12.33	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312B0D

Deuteranopia (green-blind)

#423A0C

Tritanopia (blue-blind)

#6E061A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #631c0f;
/* rgb */ color: rgb(99, 28, 15);
/* oklch */ color: oklch(34.0% 0.105 32.6);

Tailwind

colors: {
  custom: {
    50: '#965d4e',
    500: '#631c0f',
    950: '#000000',
  },
}

SCSS

$custom: #631c0f;
$custom-light: #965d4e;
$custom-dark: #000000;

JSON

{
  "hex": "#631c0f",
  "rgb": {
    "r": 99,
    "g": 28,
    "b": 15
  },
  "hsl": {
    "h": 9.286,
    "s": 73.684,
    "l": 22.353
  },
  "oklch": {
    "l": 0.33961,
    "c": 0.10501,
    "h": 32.6
  },
  "luminance": 0.03518
}

Semantic roles & 50–950 ramp

primary

#631C0F

secondary

#328C9C

accent

#D4F037

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0401

muted

#7E7977

Preview Lab

Preview with #631C0F

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

Preview Lab → · Contrast checker → · Palette generator →