#631819#631819

#631819 is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.6% C 0.107 H 24.4°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#631819
RGB	rgb(99, 24, 25)
HSL	hsl(359, 61%, 24%)
HSV	hsv(359, 76%, 39%)
CMYK	cmyk(0%, 75.8%, 74.7%, 61.2%)
CIE-LAB	lab(21.49, 33.50, 19.24)
CIE-LCH	lch(21.49, 38.64, 29.87°)
OKLab	oklab(33.62% 0.0978 0.0443)
OKLCH	oklch(33.62% 0.107 24.4)
XYZ	xyz(5.6483, 3.3769, 1.2739)
Luminance	0.0338 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631819 #186362

analogous

#63183F #631819 #633D18

triadic

#631819 #196318 #181963

tetradic

#631819 #3F6318 #186362 #3D1863

square

#631819 #3F6318 #186362 #3D1863

split-complementary

#631819 #18633D #183F63

monochromatic

#190606 #320C0D #631819 #942425 #C63032

Accessibility & contrast

On white

12.54

#631819 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#631819 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631819

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631819	#FFFFFF	#000000	##FFFFFF
##631819	1.00	12.54	1.68	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D2918

Deuteranopia (green-blind)

#403917

Tritanopia (blue-blind)

#6D0119

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #631819;
/* rgb */ color: rgb(99, 24, 25);
/* oklch */ color: oklch(33.6% 0.107 24.4);

Tailwind

colors: {
  custom: {
    50: '#965b55',
    500: '#631819',
    950: '#000000',
  },
}

SCSS

$custom: #631819;
$custom-light: #965b55;
$custom-dark: #000000;

JSON

{
  "hex": "#631819",
  "rgb": {
    "r": 99,
    "g": 24,
    "b": 25
  },
  "hsl": {
    "h": 359.2,
    "s": 60.976,
    "l": 24.118
  },
  "oklch": {
    "l": 0.33616,
    "c": 0.10735,
    "h": 24.4
  },
  "luminance": 0.03376
}

Semantic roles & 50–950 ramp

primary

#631819

secondary

#3E9998

accent

#E4E244

background

#F9F5F4

surface

#F2E9E8

border

#CCC5C4

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #631819

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

Preview Lab → · Contrast checker → · Palette generator →