#631817#631817

#631817 is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.6% C 0.108 H 25.7°. Best body text is #FFFFFF at 12.55:1 contrast (WCAG AA passes).

Color values

HEX	#631817
RGB	rgb(99, 24, 23)
HSL	hsl(1, 62%, 24%)
HSV	hsv(1, 77%, 39%)
CMYK	cmyk(0%, 75.8%, 76.8%, 61.2%)
CIE-LAB	lab(21.46, 33.40, 20.53)
CIE-LCH	lch(21.46, 39.20, 31.58°)
OKLab	oklab(33.58% 0.0969 0.0467)
OKLCH	oklch(33.58% 0.108 25.7)
XYZ	xyz(5.6275, 3.3686, 1.1643)
Luminance	0.0337 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631817 #176263

analogous

#63173C #631817 #633E17

triadic

#631817 #176318 #181763

tetradic

#631817 #3C6317 #176263 #3E1763

square

#631817 #3C6317 #176263 #3E1763

split-complementary

#631817 #17633E #173C63

monochromatic

#190606 #310C0B #631817 #952423 #C6302E

Accessibility & contrast

On white

12.55

#631817 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#631817 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631817

12.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631817	#FFFFFF	#000000	##FFFFFF
##631817	1.00	12.55	1.67	12.55
#FFFFFF	12.55	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2916

Deuteranopia (green-blind)

#403914

Tritanopia (blue-blind)

#6D0019

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631817;
/* rgb */ color: rgb(99, 24, 23);
/* oklch */ color: oklch(33.6% 0.108 25.7);

Tailwind

colors: {
  custom: {
    50: '#965b54',
    500: '#631817',
    950: '#000000',
  },
}

SCSS

$custom: #631817;
$custom-light: #965b54;
$custom-dark: #000000;

JSON

{
  "hex": "#631817",
  "rgb": {
    "r": 99,
    "g": 24,
    "b": 23
  },
  "hsl": {
    "h": 0.789,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.33583,
    "c": 0.10762,
    "h": 25.7
  },
  "luminance": 0.03368
}

Semantic roles & 50–950 ramp

primary

#631817

secondary

#3C989A

accent

#E3E542

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631817

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

Preview Lab → · Contrast checker → · Palette generator →