#631618#631618

#631618 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.4% C 0.110 H 24.1°. Best body text is #FFFFFF at 12.66:1 contrast (WCAG AA passes).

Color values

HEX	#631618
RGB	rgb(99, 22, 24)
HSL	hsl(358, 64%, 24%)
HSV	hsv(358, 78%, 39%)
CMYK	cmyk(0%, 77.8%, 75.8%, 61.2%)
CIE-LAB	lab(21.18, 34.27, 19.54)
CIE-LCH	lch(21.18, 39.45, 29.69°)
OKLab	oklab(33.38% 0.0999 0.0448)
OKLCH	oklch(33.38% 0.11 24.1)
XYZ	xyz(5.5980, 3.2933, 1.2049)
Luminance	0.0329 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631618 #166361

analogous

#63163E #631618 #633A16

triadic

#631618 #186316 #161863

tetradic

#631618 #3E6316 #166361 #3A1663

square

#631618 #3E6316 #166361 #3A1663

split-complementary

#631618 #16633A #163E63

monochromatic

#190606 #310B0C #631618 #952124 #C72C30

Accessibility & contrast

On white

12.66

#631618 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#631618 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631618

12.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631618	#FFFFFF	#000000	##FFFFFF
##631618	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)

#2C2817

Deuteranopia (green-blind)

#403915

Tritanopia (blue-blind)

#6D0018

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631618;
/* rgb */ color: rgb(99, 22, 24);
/* oklch */ color: oklch(33.4% 0.110 24.1);

Tailwind

colors: {
  custom: {
    50: '#965a54',
    500: '#631618',
    950: '#000000',
  },
}

SCSS

$custom: #631618;
$custom-light: #965a54;
$custom-dark: #000000;

JSON

{
  "hex": "#631618",
  "rgb": {
    "r": 99,
    "g": 22,
    "b": 24
  },
  "hsl": {
    "h": 358.442,
    "s": 63.636,
    "l": 23.725
  },
  "oklch": {
    "l": 0.33378,
    "c": 0.10952,
    "h": 24.1
  },
  "luminance": 0.03292
}

Semantic roles & 50–950 ramp

primary

#631618

secondary

#3B9A97

accent

#E7E241

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631618

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

Preview Lab → · Contrast checker → · Palette generator →