#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
RGB	rgb(160, 55, 27)
HSL	hsl(13, 71%, 37%)
HSV	hsv(13, 83%, 63%)
CMYK	cmyk(0%, 65.6%, 83.1%, 37.3%)
CIE-LAB	lab(38.35, 42.16, 39.43)
CIE-LCH	lch(38.35, 57.73, 43.09°)
OKLab	oklab(48.46% 0.1181 0.0843)
OKLCH	oklch(48.46% 0.145 35.5)
XYZ	xyz(16.0630, 10.2874, 2.1766)
Luminance	0.1028 (WCAG relative)
Temperature	warm
Family	red

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
##A0371B	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

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.

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