#631518#631518

#631518 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.3% C 0.111 H 23.7°. Best body text is #FFFFFF at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#631518
RGB	rgb(99, 21, 24)
HSL	hsl(358, 65%, 24%)
HSV	hsv(358, 79%, 39%)
CMYK	cmyk(0%, 78.8%, 75.8%, 61.2%)
CIE-LAB	lab(21.04, 34.66, 19.37)
CIE-LCH	lch(21.04, 39.71, 29.20°)
OKLab	oklab(33.27% 0.1012 0.0444)
OKLCH	oklch(33.27% 0.111 23.7)
XYZ	xyz(5.5793, 3.2558, 1.1986)
Luminance	0.0326 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631518 #156360

analogous

#63153F #631518 #633915

triadic

#631518 #186315 #151863

tetradic

#631518 #3F6315 #156360 #391563

square

#631518 #3F6315 #156360 #391563

split-complementary

#631518 #156339 #153F63

monochromatic

#190506 #310A0C #631518 #952024 #C82A30

Accessibility & contrast

On white

12.72

#631518 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#631518 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631518

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631518	#FFFFFF	#000000	##FFFFFF
##631518	1.00	12.72	1.65	12.72
#FFFFFF	12.72	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2817

Deuteranopia (green-blind)

#3F3915

Tritanopia (blue-blind)

#6E0017

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631518;
/* rgb */ color: rgb(99, 21, 24);
/* oklch */ color: oklch(33.3% 0.111 23.7);

Tailwind

colors: {
  custom: {
    50: '#965954',
    500: '#631518',
    950: '#000000',
  },
}

SCSS

$custom: #631518;
$custom-light: #965954;
$custom-dark: #000000;

JSON

{
  "hex": "#631518",
  "rgb": {
    "r": 99,
    "g": 21,
    "b": 24
  },
  "hsl": {
    "h": 357.692,
    "s": 65,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33273,
    "c": 0.11051,
    "h": 23.7
  },
  "luminance": 0.03255
}

Semantic roles & 50–950 ramp

primary

#631518

secondary

#3A9A96

accent

#E8E240

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631518

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

Preview Lab → · Contrast checker → · Palette generator →