#631B0E#631B0E

#631B0E is a dark, moderate red. Relative luminance 0.035; OKLCH L 33.8% C 0.106 H 32.5°. Best body text is #FFFFFF at 12.40:1 contrast (WCAG AA passes).

Color values

HEX#631B0E
RGBrgb(99, 27, 14)
HSLhsl(9, 75%, 22%)
HSVhsv(9, 86%, 39%)
CMYKcmyk(0%, 72.7%, 85.9%, 61.2%)
CIE-LABlab(21.83, 31.69, 26.35)
CIE-LCHlch(21.83, 41.22, 39.75°)
OKLaboklab(33.82% 0.0896 0.0571)
OKLCHoklch(33.82% 0.106 32.5)
XYZxyz(5.6174, 3.4691, 0.7892)
Luminance0.0347 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#631B0E #0E5663
analogous
#630E2C #631B0E #63450E
triadic
#631B0E #0E631B #1B0E63
tetradic
#631B0E #2C630E #0E5663 #450E63
square
#631B0E #2C630E #0E5663 #450E63
split-complementary
#631B0E #0E6345 #0E2C63
monochromatic
#1B0704 #2D0C06 #631B0E #992A16 #CE381D

Accessibility & contrast

On white

12.40
#631B0E on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.69
#631B0E on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B0E
12.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##631B0E#FFFFFF#000000##FFFFFF
##631B0E1.0012.401.6912.40
#FFFFFF12.401.0021.001.00
#0000001.6921.001.0021.00
##FFFFFF12.401.0021.001.00

Color blindness preview

Protanopia (red-blind)
#302A0C
Deuteranopia (green-blind)
#423A0B
Tritanopia (blue-blind)
#6E0419
Achromatopsia (no color)
#343434

Design tokens & code

CSS
--color: #631b0e;
/* rgb */ color: rgb(99, 27, 14);
/* oklch */ color: oklch(33.8% 0.106 32.5);
Tailwind
colors: {
  custom: {
    50: '#965c4e',
    500: '#631b0e',
    950: '#000000',
  },
}
SCSS
$custom: #631b0e;
$custom-light: #965c4e;
$custom-dark: #000000;
JSON
{
  "hex": "#631b0e",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 14
  },
  "hsl": {
    "h": 9.176,
    "s": 75.221,
    "l": 22.157
  },
  "oklch": {
    "l": 0.33824,
    "c": 0.10621,
    "h": 32.5
  },
  "luminance": 0.03468
}

Semantic roles & 50–950 ramp

primary
#631B0E
secondary
#308C9C
accent
#D5F236
background
#F9F5F4
surface
#F2E9E7
border
#CCC5C3
text
#0F0401
muted
#7E7977

Preview Lab

Preview with #631B0E

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

Preview Lab → · Contrast checker → · Palette generator →

#631B0E Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva