#AD371B#AD371B

#AD371B is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.7% C 0.159 H 34.4°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX#AD371B
RGBrgb(173, 55, 27)
HSLhsl(12, 73%, 39%)
HSVhsv(12, 84%, 68%)
CMYKcmyk(0%, 68.2%, 84.4%, 32.2%)
CIE-LABlab(40.73, 46.78, 42.49)
CIE-LCHlch(40.73, 63.20, 42.25°)
OKLaboklab(50.69% 0.1311 0.0897)
OKLCHoklch(50.69% 0.159 34.4)
XYZxyz(18.7998, 11.6986, 2.3048)
Luminance0.1170 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#AD371B #1B91AD
analogous
#AD1B48 #AD371B #AD801B
triadic
#AD371B #1BAD37 #371BAD
tetradic
#AD371B #48AD1B #1B91AD #801BAD
square
#AD371B #48AD1B #1B91AD #801BAD
split-complementary
#AD371B #1BAD80 #1B48AD
monochromatic
#43150A #782613 #AD371B #DD4B28 #E6775D

Accessibility & contrast

On white

6.29
#AD371B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.34
#AD371B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD371B
6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##AD371B#FFFFFF#000000##FFFFFF
##AD371B1.006.293.346.29
#FFFFFF6.291.0021.001.00
#0000003.3421.001.0021.00
##FFFFFF6.291.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5A4F16
Deuteranopia (green-blind)
#776A15
Tritanopia (blue-blind)
#BF0E32
Achromatopsia (no color)
#606060

Design tokens & code

CSS
--color: #ad371b;
/* rgb */ color: rgb(173, 55, 27);
/* oklch */ color: oklch(50.7% 0.159 34.4);
Tailwind
colors: {
  custom: {
    50: '#ce745a',
    500: '#ad371b',
    950: '#000000',
  },
}
SCSS
$custom: #ad371b;
$custom-light: #ce745a;
$custom-dark: #000000;
JSON
{
  "hex": "#ad371b",
  "rgb": {
    "r": 173,
    "g": 55,
    "b": 27
  },
  "hsl": {
    "h": 11.507,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.50689,
    "c": 0.15886,
    "h": 34.4
  },
  "luminance": 0.11696
}

Semantic roles & 50–950 ramp

primary
#AD371B
secondary
#5AB4CA
accent
#CCF038
background
#FDF7F5
surface
#FBEDE9
border
#D4C8C5
text
#150904
muted
#837B79

Preview Lab

Preview with #AD371B

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

Preview Lab → · Contrast checker → · Palette generator →

#AD371B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva