#631D11#631D11

#631D11 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.1% C 0.104 H 32.2°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#631D11
RGB	rgb(99, 29, 17)
HSL	hsl(9, 71%, 23%)
HSV	hsv(9, 83%, 39%)
CMYK	cmyk(0%, 70.7%, 82.8%, 61.2%)
CIE-LAB	lab(22.21, 30.88, 25.12)
CIE-LCH	lch(22.21, 39.81, 39.13°)
OKLab	oklab(34.11% 0.0877 0.0551)
OKLCH	oklch(34.11% 0.104 32.2)
XYZ	xyz(5.6868, 3.5727, 0.9204)
Luminance	0.0357 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631D11 #115763

analogous

#63112E #631D11 #634611

triadic

#631D11 #11631D #1D1163

tetradic

#631D11 #2E6311 #115763 #461163

square

#631D11 #2E6311 #115763 #461163

split-complementary

#631D11 #116346 #112E63

monochromatic

#1A0804 #2F0E08 #631D11 #972C1A #CB3C23

Accessibility & contrast

On white

12.25

#631D11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#631D11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631D11

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631D11	#FFFFFF	#000000	##FFFFFF
##631D11	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312B0F

Deuteranopia (green-blind)

#423B0E

Tritanopia (blue-blind)

#6E081B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #631d11;
/* rgb */ color: rgb(99, 29, 17);
/* oklch */ color: oklch(34.1% 0.104 32.2);

Tailwind

colors: {
  custom: {
    50: '#965d50',
    500: '#631d11',
    950: '#000000',
  },
}

SCSS

$custom: #631d11;
$custom-light: #965d50;
$custom-dark: #000000;

JSON

{
  "hex": "#631d11",
  "rgb": {
    "r": 99,
    "g": 29,
    "b": 17
  },
  "hsl": {
    "h": 8.78,
    "s": 70.69,
    "l": 22.745
  },
  "oklch": {
    "l": 0.34114,
    "c": 0.10356,
    "h": 32.2
  },
  "luminance": 0.03572
}

Semantic roles & 50–950 ramp

primary

#631D11

secondary

#348C9B

accent

#D3ED3A

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631D11

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

Preview Lab → · Contrast checker → · Palette generator →