#631A10#631A10

#631A10 is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.7% C 0.107 H 30.9°. Best body text is #FFFFFF at 12.46:1 contrast (WCAG AA passes).

Color values

HEX	#631A10
RGB	rgb(99, 26, 16)
HSL	hsl(7, 72%, 23%)
HSV	hsv(7, 84%, 39%)
CMYK	cmyk(0%, 73.7%, 83.8%, 61.2%)
CIE-LAB	lab(21.69, 32.22, 25.14)
CIE-LCH	lch(21.69, 40.86, 37.97°)
OKLab	oklab(33.72% 0.0916 0.0549)
OKLCH	oklch(33.72% 0.107 30.9)
XYZ	xyz(5.6092, 3.4297, 0.8568)
Luminance	0.0343 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631A10 #105963

analogous

#63102F #631A10 #634410

triadic

#631A10 #10631A #1A1063

tetradic

#631A10 #2F6310 #105963 #441063

square

#631A10 #2F6310 #105963 #441063

split-complementary

#631A10 #106344 #102F63

monochromatic

#1A0704 #2E0C07 #631A10 #982819 #CC3621

Accessibility & contrast

On white

12.46

#631A10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#631A10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631A10

12.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631A10	#FFFFFF	#000000	##FFFFFF
##631A10	1.00	12.46	1.69	12.46
#FFFFFF	12.46	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2A0E

Deuteranopia (green-blind)

#413A0D

Tritanopia (blue-blind)

#6E0218

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #631a10;
/* rgb */ color: rgb(99, 26, 16);
/* oklch */ color: oklch(33.7% 0.107 30.9);

Tailwind

colors: {
  custom: {
    50: '#965c4f',
    500: '#631a10',
    950: '#000000',
  },
}

SCSS

$custom: #631a10;
$custom-light: #965c4f;
$custom-dark: #000000;

JSON

{
  "hex": "#631a10",
  "rgb": {
    "r": 99,
    "g": 26,
    "b": 16
  },
  "hsl": {
    "h": 7.229,
    "s": 72.174,
    "l": 22.549
  },
  "oklch": {
    "l": 0.33723,
    "c": 0.10682,
    "h": 30.9
  },
  "luminance": 0.03429
}

Semantic roles & 50–950 ramp

primary

#631A10

secondary

#338F9C

accent

#D9EF39

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631A10

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

Preview Lab → · Contrast checker → · Palette generator →