#631D10#631D10

#631D10 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.1% C 0.104 H 32.7°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#631D10
RGB	rgb(99, 29, 16)
HSL	hsl(9, 72%, 23%)
HSV	hsv(9, 84%, 39%)
CMYK	cmyk(0%, 70.7%, 83.8%, 61.2%)
CIE-LAB	lab(22.19, 30.84, 25.68)
CIE-LCH	lch(22.19, 40.13, 39.78°)
OKLab	oklab(34.1% 0.0873 0.0561)
OKLCH	oklch(34.1% 0.104 32.7)
XYZ	xyz(5.6791, 3.5696, 0.8801)
Luminance	0.0357 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631D10 #105663

analogous

#63102C #631D10 #634710

triadic

#631D10 #10631D #1D1063

tetradic

#631D10 #2C6310 #105663 #471063

square

#631D10 #2C6310 #105663 #471063

split-complementary

#631D10 #106347 #102C63

monochromatic

#1A0804 #2E0E07 #631D10 #982C19 #CC3C21

Accessibility & contrast

On white

12.25

#631D10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#631D10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631D10

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631D10	#FFFFFF	#000000	##FFFFFF
##631D10	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)

#312B0E

Deuteranopia (green-blind)

#423B0D

Tritanopia (blue-blind)

#6E081B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #631d10;
/* rgb */ color: rgb(99, 29, 16);
/* oklch */ color: oklch(34.1% 0.104 32.7);

Tailwind

colors: {
  custom: {
    50: '#965d4f',
    500: '#631d10',
    950: '#000000',
  },
}

SCSS

$custom: #631d10;
$custom-light: #965d4f;
$custom-dark: #000000;

JSON

{
  "hex": "#631d10",
  "rgb": {
    "r": 99,
    "g": 29,
    "b": 16
  },
  "hsl": {
    "h": 9.398,
    "s": 72.174,
    "l": 22.549
  },
  "oklch": {
    "l": 0.34102,
    "c": 0.10378,
    "h": 32.7
  },
  "luminance": 0.03569
}

Semantic roles & 50–950 ramp

primary

#631D10

secondary

#338B9C

accent

#D2EF39

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631D10

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

Preview Lab → · Contrast checker → · Palette generator →