#631D2C#631D2C

#631D2C is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.6% C 0.101 H 11.4°. Best body text is #FFFFFF at 12.05:1 contrast (WCAG AA passes).

Color values

HEX	#631D2C
RGB	rgb(99, 29, 44)
HSL	hsl(347, 55%, 25%)
HSV	hsv(347, 71%, 39%)
CMYK	cmyk(0%, 70.7%, 55.6%, 61.2%)
CIE-LAB	lab(22.70, 32.71, 7.83)
CIE-LCH	lch(22.70, 33.63, 13.46°)
OKLab	oklab(34.65% 0.099 0.0199)
OKLCH	oklch(34.65% 0.101 11.4)
XYZ	xyz(6.0401, 3.7140, 2.7812)
Luminance	0.0371 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631D2C #1D6354

analogous

#631D4F #631D2C #63311D

triadic

#631D2C #2C631D #1D2C63

tetradic

#631D2C #4F631D #1D6354 #311D63

square

#631D2C #4F631D #1D6354 #311D63

split-complementary

#631D2C #1D6331 #1D4F63

monochromatic

#18070B #340F17 #631D2C #922B41 #C23956

Accessibility & contrast

On white

12.05

#631D2C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#631D2C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631D2C

12.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631D2C	#FFFFFF	#000000	##FFFFFF
##631D2C	1.00	12.05	1.74	12.05
#FFFFFF	12.05	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D2D2C

Deuteranopia (green-blind)

#403B2A

Tritanopia (blue-blind)

#6C1023

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #631d2c;
/* rgb */ color: rgb(99, 29, 44);
/* oklch */ color: oklch(34.6% 0.101 11.4);

Tailwind

colors: {
  custom: {
    50: '#945e64',
    500: '#631d2c',
    950: '#000000',
  },
}

SCSS

$custom: #631d2c;
$custom-light: #945e64;
$custom-dark: #000000;

JSON

{
  "hex": "#631d2c",
  "rgb": {
    "r": 99,
    "g": 29,
    "b": 44
  },
  "hsl": {
    "h": 347.143,
    "s": 54.688,
    "l": 25.098
  },
  "oklch": {
    "l": 0.34646,
    "c": 0.101,
    "h": 11.4
  },
  "luminance": 0.03713
}

Semantic roles & 50–950 ramp

primary

#631D2C

secondary

#449886

accent

#DEBE4A

background

#F9F5F6

surface

#F2E9EB

border

#CCC5C6

text

#0E0505

muted

#7E797A

Preview Lab

Preview with #631D2C

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

Preview Lab → · Contrast checker → · Palette generator →