#AD281B#AD281B

#AD281B is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.2% C 0.171 H 30.0°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX#AD281B
RGBrgb(173, 40, 27)
HSLhsl(5, 73%, 39%)
HSVhsv(5, 84%, 68%)
CMYKcmyk(0%, 76.9%, 84.4%, 32.2%)
CIE-LABlab(38.70, 52.39, 40.65)
CIE-LCHlch(38.70, 66.31, 37.81°)
OKLaboklab(49.17% 0.1485 0.0856)
OKLCHoklch(49.17% 0.171 30)
XYZxyz(18.1924, 10.4839, 2.1024)
Luminance0.1048 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#AD281B #1BA0AD
analogous
#AD1B57 #AD281B #AD711B
triadic
#AD281B #1BAD28 #281BAD
tetradic
#AD281B #57AD1B #1BA0AD #711BAD
square
#AD281B #57AD1B #1BA0AD #711BAD
split-complementary
#AD281B #1BAD71 #1B57AD
monochromatic
#43100A #781C13 #AD281B #DD3828 #E6695D

Accessibility & contrast

On white

6.78
#AD281B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.10
#AD281B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD281B
6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##AD281B#FFFFFF#000000##FFFFFF
##AD281B1.006.783.106.78
#FFFFFF6.781.0021.001.00
#0000003.1021.001.0021.00
##FFFFFF6.781.0021.001.00

Color blindness preview

Protanopia (red-blind)
#524818
Deuteranopia (green-blind)
#726613
Tritanopia (blue-blind)
#BF0027
Achromatopsia (no color)
#5B5B5B

Design tokens & code

CSS
--color: #ad281b;
/* rgb */ color: rgb(173, 40, 27);
/* oklch */ color: oklch(49.2% 0.171 30.0);
Tailwind
colors: {
  custom: {
    50: '#cf6d59',
    500: '#ad281b',
    950: '#000000',
  },
}
SCSS
$custom: #ad281b;
$custom-light: #cf6d59;
$custom-dark: #000000;
JSON
{
  "hex": "#ad281b",
  "rgb": {
    "r": 173,
    "g": 40,
    "b": 27
  },
  "hsl": {
    "h": 5.342,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.49167,
    "c": 0.17138,
    "h": 30
  },
  "luminance": 0.10481
}

Semantic roles & 50–950 ramp

primary
#AD281B
secondary
#5AC0CA
accent
#DFF038
background
#FEF6F5
surface
#FCECE9
border
#D5C7C5
text
#160804
muted
#847A79

Preview Lab

Preview with #AD281B

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

Preview Lab → · Contrast checker → · Palette generator →

#AD281B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva