#631816#631816

#631816 is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.6% C 0.108 H 26.4°. Best body text is #FFFFFF at 12.55:1 contrast (WCAG AA passes).

Color values

HEX	#631816
RGB	rgb(99, 24, 22)
HSL	hsl(2, 64%, 24%)
HSV	hsv(2, 78%, 39%)
CMYK	cmyk(0%, 75.8%, 77.8%, 61.2%)
CIE-LAB	lab(21.45, 33.35, 21.17)
CIE-LCH	lch(21.45, 39.50, 32.41°)
OKLab	oklab(33.57% 0.0965 0.0479)
OKLCH	oklch(33.57% 0.108 26.4)
XYZ	xyz(5.6177, 3.3647, 1.1126)
Luminance	0.0336 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631816 #166163

analogous

#63163A #631816 #633E16

triadic

#631816 #166318 #181663

tetradic

#631816 #3A6316 #166163 #3E1663

square

#631816 #3A6316 #166163 #3E1663

split-complementary

#631816 #16633E #163A63

monochromatic

#190606 #310C0B #631816 #952421 #C7302C

Accessibility & contrast

On white

12.55

#631816 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#631816 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631816

12.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631816	#FFFFFF	#000000	##FFFFFF
##631816	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)

#2E2915

Deuteranopia (green-blind)

#403913

Tritanopia (blue-blind)

#6E0018

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631816;
/* rgb */ color: rgb(99, 24, 22);
/* oklch */ color: oklch(33.6% 0.108 26.4);

Tailwind

colors: {
  custom: {
    50: '#965b53',
    500: '#631816',
    950: '#000000',
  },
}

SCSS

$custom: #631816;
$custom-light: #965b53;
$custom-dark: #000000;

JSON

{
  "hex": "#631816",
  "rgb": {
    "r": 99,
    "g": 24,
    "b": 22
  },
  "hsl": {
    "h": 1.558,
    "s": 63.636,
    "l": 23.725
  },
  "oklch": {
    "l": 0.33568,
    "c": 0.10777,
    "h": 26.4
  },
  "luminance": 0.03364
}

Semantic roles & 50–950 ramp

primary

#631816

secondary

#3B979A

accent

#E2E741

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631816

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

Preview Lab → · Contrast checker → · Palette generator →