#A0371B#A0371B

#A0371B is a mid, vivid red. Relative luminance 0.103; OKLCH L 48.5% C 0.145 H 35.5°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX#A0371B
RGBrgb(160, 55, 27)
HSLhsl(13, 71%, 37%)
HSVhsv(13, 83%, 63%)
CMYKcmyk(0%, 65.6%, 83.1%, 37.3%)
CIE-LABlab(38.35, 42.16, 39.43)
CIE-LCHlch(38.35, 57.73, 43.09°)
OKLaboklab(48.46% 0.1181 0.0843)
OKLCHoklch(48.46% 0.145 35.5)
XYZxyz(16.0630, 10.2874, 2.1766)
Luminance0.1028 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#A0371B #1B84A0
analogous
#A01B41 #A0371B #A07A1B
triadic
#A0371B #1BA037 #371BA0
tetradic
#A0371B #41A01B #1B84A0 #7A1BA0
square
#A0371B #41A01B #1B84A0 #7A1BA0
split-complementary
#A0371B #1BA07A #1B41A0
monochromatic
#371309 #6C2512 #A0371B #D44924 #E27153

Accessibility & contrast

On white

6.87
#A0371B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.06
#A0371B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A0371B
6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##A0371B#FFFFFF#000000##FFFFFF
##A0371B1.006.873.066.87
#FFFFFF6.871.0021.001.00
#0000003.0621.001.0021.00
##FFFFFF6.871.0021.001.00

Color blindness preview

Protanopia (red-blind)
#554C17
Deuteranopia (green-blind)
#6F6316
Tritanopia (blue-blind)
#B01932
Achromatopsia (no color)
#5A5A5A

Design tokens & code

CSS
--color: #a0371b;
/* rgb */ color: rgb(160, 55, 27);
/* oklch */ color: oklch(48.5% 0.145 35.5);
Tailwind
colors: {
  custom: {
    50: '#c4735a',
    500: '#a0371b',
    950: '#000000',
  },
}
SCSS
$custom: #a0371b;
$custom-light: #c4735a;
$custom-dark: #000000;
JSON
{
  "hex": "#a0371b",
  "rgb": {
    "r": 160,
    "g": 55,
    "b": 27
  },
  "hsl": {
    "h": 12.632,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.48458,
    "c": 0.14503,
    "h": 35.5
  },
  "luminance": 0.10285
}

Semantic roles & 50–950 ramp

primary
#A0371B
secondary
#52ADC5
accent
#C8EE3A
background
#FDF7F5
surface
#FAEDE9
border
#D3C8C5
text
#140804
muted
#837B79

Preview Lab

Preview with #A0371B

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

Preview Lab → · Contrast checker → · Palette generator →

#A0371B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva