#631218#631218

#631218 is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.0% C 0.113 H 22.5°. Best body text is #FFFFFF at 12.88:1 contrast (WCAG AA passes).

Color values

HEX	#631218
RGB	rgb(99, 18, 24)
HSL	hsl(356, 69%, 23%)
HSV	hsv(356, 82%, 39%)
CMYK	cmyk(0%, 81.8%, 75.8%, 61.2%)
CIE-LAB	lab(20.64, 35.77, 18.90)
CIE-LCH	lch(20.64, 40.46, 27.85°)
OKLab	oklab(32.98% 0.1047 0.0434)
OKLCH	oklch(32.98% 0.113 22.5)
XYZ	xyz(5.5274, 3.1521, 1.1813)
Luminance	0.0315 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631218 #12635D

analogous

#631240 #631218 #633512

triadic

#631218 #186312 #121863

tetradic

#631218 #406312 #12635D #351263

square

#631218 #406312 #12635D #351263

split-complementary

#631218 #126335 #124063

monochromatic

#1A0506 #2F090B #631218 #971B25 #CB2531

Accessibility & contrast

On white

12.88

#631218 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#631218 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631218

12.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631218	#FFFFFF	#000000	##FFFFFF
##631218	1.00	12.88	1.63	12.88
#FFFFFF	12.88	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2717

Deuteranopia (green-blind)

#3F3815

Tritanopia (blue-blind)

#6E0015

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #631218;
/* rgb */ color: rgb(99, 18, 24);
/* oklch */ color: oklch(33.0% 0.113 22.5);

Tailwind

colors: {
  custom: {
    50: '#965854',
    500: '#631218',
    950: '#000000',
  },
}

SCSS

$custom: #631218;
$custom-light: #965854;
$custom-dark: #000000;

JSON

{
  "hex": "#631218",
  "rgb": {
    "r": 99,
    "g": 18,
    "b": 24
  },
  "hsl": {
    "h": 355.556,
    "s": 69.231,
    "l": 22.941
  },
  "oklch": {
    "l": 0.32977,
    "c": 0.11335,
    "h": 22.5
  },
  "luminance": 0.03151
}

Semantic roles & 50–950 ramp

primary

#631218

secondary

#369B93

accent

#ECDF3C

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631218

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

Preview Lab → · Contrast checker → · Palette generator →