#631810#631810

#631810 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.5% C 0.109 H 29.9°. Best body text is #FFFFFF at 12.59:1 contrast (WCAG AA passes).

Color values

HEX	#631810
RGB	rgb(99, 24, 16)
HSL	hsl(6, 72%, 23%)
HSV	hsv(6, 84%, 39%)
CMYK	cmyk(0%, 75.8%, 83.8%, 61.2%)
CIE-LAB	lab(21.37, 33.08, 24.80)
CIE-LCH	lch(21.37, 41.34, 36.86°)
OKLab	oklab(33.49% 0.0943 0.0542)
OKLCH	oklch(33.49% 0.109 29.9)
XYZ	xyz(5.5664, 3.3442, 0.8425)
Luminance	0.0334 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631810 #105B63

analogous

#631032 #631810 #634110

triadic

#631810 #106318 #181063

tetradic

#631810 #326310 #105B63 #411063

square

#631810 #326310 #105B63 #411063

split-complementary

#631810 #106341 #103263

monochromatic

#1A0604 #2E0B07 #631810 #982519 #CC3221

Accessibility & contrast

On white

12.59

#631810 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#631810 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631810

12.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631810	#FFFFFF	#000000	##FFFFFF
##631810	1.00	12.59	1.67	12.59
#FFFFFF	12.59	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E290E

Deuteranopia (green-blind)

#41390D

Tritanopia (blue-blind)

#6E0017

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631810;
/* rgb */ color: rgb(99, 24, 16);
/* oklch */ color: oklch(33.5% 0.109 29.9);

Tailwind

colors: {
  custom: {
    50: '#965b4f',
    500: '#631810',
    950: '#000000',
  },
}

SCSS

$custom: #631810;
$custom-light: #965b4f;
$custom-dark: #000000;

JSON

{
  "hex": "#631810",
  "rgb": {
    "r": 99,
    "g": 24,
    "b": 16
  },
  "hsl": {
    "h": 5.783,
    "s": 72.174,
    "l": 22.549
  },
  "oklch": {
    "l": 0.33486,
    "c": 0.10879,
    "h": 29.9
  },
  "luminance": 0.03343
}

Semantic roles & 50–950 ramp

primary

#631810

secondary

#33929C

accent

#DDEF39

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #631810

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

Preview Lab → · Contrast checker → · Palette generator →