#631520#631520

#631520 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.4% C 0.110 H 17.9°. Best body text is #FFFFFF at 12.66:1 contrast (WCAG AA passes).

Color values

HEX	#631520
RGB	rgb(99, 21, 32)
HSL	hsl(352, 65%, 24%)
HSV	hsv(352, 79%, 39%)
CMYK	cmyk(0%, 78.8%, 67.7%, 61.2%)
CIE-LAB	lab(21.19, 35.14, 14.09)
CIE-LCH	lch(21.19, 37.87, 21.85°)
OKLab	oklab(33.43% 0.1046 0.0339)
OKLCH	oklch(33.43% 0.11 17.9)
XYZ	xyz(5.6751, 3.2941, 1.7032)
Luminance	0.0329 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631520 #156358

analogous

#631547 #631520 #633115

triadic

#631520 #206315 #152063

tetradic

#631520 #476315 #156358 #311563

square

#631520 #476315 #156358 #311563

split-complementary

#631520 #156331 #154763

monochromatic

#190508 #310A10 #631520 #952030 #C82A41

Accessibility & contrast

On white

12.66

#631520 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#631520 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631520

12.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631520	#FFFFFF	#000000	##FFFFFF
##631520	1.00	12.66	1.66	12.66
#FFFFFF	12.66	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2820

Deuteranopia (green-blind)

#3F391E

Tritanopia (blue-blind)

#6D001A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631520;
/* rgb */ color: rgb(99, 21, 32);
/* oklch */ color: oklch(33.4% 0.110 17.9);

Tailwind

colors: {
  custom: {
    50: '#955a5b',
    500: '#631520',
    950: '#000000',
  },
}

SCSS

$custom: #631520;
$custom-light: #955a5b;
$custom-dark: #000000;

JSON

{
  "hex": "#631520",
  "rgb": {
    "r": 99,
    "g": 21,
    "b": 32
  },
  "hsl": {
    "h": 351.538,
    "s": 65,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33427,
    "c": 0.10996,
    "h": 17.9
  },
  "luminance": 0.03293
}

Semantic roles & 50–950 ramp

primary

#631520

secondary

#3A9A8C

accent

#E8D040

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #631520

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

Preview Lab → · Contrast checker → · Palette generator →