#631616#631616

#631616 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.3% C 0.110 H 25.4°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX#631616
RGBrgb(99, 22, 22)
HSLhsl(0, 64%, 24%)
HSVhsv(0, 78%, 39%)
CMYKcmyk(0%, 77.8%, 77.8%, 61.2%)
CIE-LABlab(21.15, 34.17, 20.83)
CIE-LCHlch(21.15, 40.02, 31.37°)
OKLaboklab(33.35% 0.0991 0.0472)
OKLCHoklch(33.35% 0.11 25.4)
XYZxyz(5.5780, 3.2852, 1.0993)
Luminance0.0328 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#631616 #166363
analogous
#63163C #631616 #633C16
triadic
#631616 #166316 #161663
tetradic
#631616 #3C6316 #166363 #3C1663
square
#631616 #3C6316 #166363 #3C1663
split-complementary
#631616 #16633C #163C63
monochromatic
#190606 #310B0B #631616 #952121 #C72C2C

Accessibility & contrast

On white

12.68
#631616 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.66
#631616 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631616
12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##631616#FFFFFF#000000##FFFFFF
##6316161.0012.681.6612.68
#FFFFFF12.681.0021.001.00
#0000001.6621.001.0021.00
##FFFFFF12.681.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2D2815
Deuteranopia (green-blind)
#403913
Tritanopia (blue-blind)
#6E0017
Achromatopsia (no color)
#333333

Design tokens & code

CSS
--color: #631616;
/* rgb */ color: rgb(99, 22, 22);
/* oklch */ color: oklch(33.3% 0.110 25.4);
Tailwind
colors: {
  custom: {
    50: '#965a53',
    500: '#631616',
    950: '#000000',
  },
}
SCSS
$custom: #631616;
$custom-light: #965a53;
$custom-dark: #000000;
JSON
{
  "hex": "#631616",
  "rgb": {
    "r": 99,
    "g": 22,
    "b": 22
  },
  "hsl": {
    "h": 0,
    "s": 63.636,
    "l": 23.725
  },
  "oklch": {
    "l": 0.33346,
    "c": 0.10978,
    "h": 25.4
  },
  "luminance": 0.03284
}

Semantic roles & 50–950 ramp

primary
#631616
secondary
#3B9A9A
accent
#E7E741
background
#F9F5F4
surface
#F2E9E7
border
#CCC5C3
text
#0F0402
muted
#7E7978

Preview Lab

Preview with #631616

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

Preview Lab → · Contrast checker → · Palette generator →

#631616 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva