#631525#631525

#631525 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.5% C 0.110 H 14.0°. Best body text is #FFFFFF at 12.62:1 contrast (WCAG AA passes).

Color values

HEX	#631525
RGB	rgb(99, 21, 37)
HSL	hsl(348, 65%, 24%)
HSV	hsv(348, 79%, 39%)
CMYK	cmyk(0%, 78.8%, 62.6%, 61.2%)
CIE-LAB	lab(21.30, 35.51, 10.76)
CIE-LCH	lch(21.30, 37.10, 16.86°)
OKLab	oklab(33.54% 0.1068 0.0266)
OKLCH	oklch(33.54% 0.11 14)
XYZ	xyz(5.7483, 3.3234, 2.0887)
Luminance	0.0332 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631525 #156353

analogous

#63154C #631525 #632C15

triadic

#631525 #256315 #152563

tetradic

#631525 #4C6315 #156353 #2C1563

square

#631525 #4C6315 #156353 #2C1563

split-complementary

#631525 #15632C #154C63

monochromatic

#190509 #310A12 #631525 #952038 #C82A4B

Accessibility & contrast

On white

12.62

#631525 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#631525 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631525

12.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631525	#FFFFFF	#000000	##FFFFFF
##631525	1.00	12.62	1.66	12.62
#FFFFFF	12.62	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2925

Deuteranopia (green-blind)

#3E3923

Tritanopia (blue-blind)

#6D001C

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631525;
/* rgb */ color: rgb(99, 21, 37);
/* oklch */ color: oklch(33.5% 0.110 14.0);

Tailwind

colors: {
  custom: {
    50: '#955a5f',
    500: '#631525',
    950: '#000000',
  },
}

SCSS

$custom: #631525;
$custom-light: #955a5f;
$custom-dark: #000000;

JSON

{
  "hex": "#631525",
  "rgb": {
    "r": 99,
    "g": 21,
    "b": 37
  },
  "hsl": {
    "h": 347.692,
    "s": 65,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33544,
    "c": 0.11008,
    "h": 14
  },
  "luminance": 0.03323
}

Semantic roles & 50–950 ramp

primary

#631525

secondary

#3A9A86

accent

#E8C540

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #631525

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

Preview Lab → · Contrast checker → · Palette generator →