#A0231B#A0231B

#A0231B is a mid, vivid red. Relative luminance 0.088; OKLCH L 46.3% C 0.162 H 28.8°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#A0231B
RGB	rgb(160, 35, 27)
HSL	hsl(4, 71%, 37%)
HSV	hsv(4, 83%, 63%)
CMYK	cmyk(0%, 78.1%, 83.1%, 37.3%)
CIE-LAB	lab(35.51, 49.94, 36.74)
CIE-LCH	lch(35.51, 62.00, 36.34°)
OKLab	oklab(46.33% 0.1422 0.0783)
OKLCH	oklch(46.33% 0.162 28.8)
XYZ	xyz(15.2979, 8.7572, 1.9215)
Luminance	0.0876 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A0231B #1B98A0

analogous

#A01B56 #A0231B #A0661B

triadic

#A0231B #1BA023 #231BA0

tetradic

#A0231B #56A01B #1B98A0 #661BA0

square

#A0231B #56A01B #1B98A0 #661BA0

split-complementary

#A0231B #1BA066 #1B56A0

monochromatic

#370C09 #6C1812 #A0231B #D42E24 #E25C53

Accessibility & contrast

On white

7.63

#A0231B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#A0231B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A0231B

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A0231B	#FFFFFF	#000000	##FFFFFF
##A0231B	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4218

Deuteranopia (green-blind)

#695D14

Tritanopia (blue-blind)

#B10023

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #a0231b;
/* rgb */ color: rgb(160, 35, 27);
/* oklch */ color: oklch(46.3% 0.162 28.8);

Tailwind

colors: {
  custom: {
    50: '#c56959',
    500: '#a0231b',
    950: '#000000',
  },
}

SCSS

$custom: #a0231b;
$custom-light: #c56959;
$custom-dark: #000000;

JSON

{
  "hex": "#a0231b",
  "rgb": {
    "r": 160,
    "g": 35,
    "b": 27
  },
  "hsl": {
    "h": 3.609,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.4633,
    "c": 0.16237,
    "h": 28.8
  },
  "luminance": 0.08755
}

Semantic roles & 50–950 ramp

primary

#A0231B

secondary

#52BEC5

accent

#E3EE3A

background

#FDF6F5

surface

#FAEBE9

border

#D3C6C5

text

#150703

muted

#837A78

Preview Lab

Preview with #A0231B

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

Preview Lab → · Contrast checker → · Palette generator →