#A1231B#A1231B

#A1231B is a mid, vivid red. Relative luminance 0.089; OKLCH L 46.5% C 0.163 H 28.8°. Best body text is #FFFFFF at 7.58:1 contrast (WCAG AA passes).

Color values

HEX	#A1231B
RGB	rgb(161, 35, 27)
HSL	hsl(4, 71%, 37%)
HSV	hsv(4, 83%, 63%)
CMYK	cmyk(0%, 78.3%, 83.2%, 36.9%)
CIE-LAB	lab(35.71, 50.25, 37.01)
CIE-LCH	lch(35.71, 62.41, 36.37°)
OKLab	oklab(46.52% 0.1431 0.0788)
OKLCH	oklch(46.52% 0.163 28.8)
XYZ	xyz(15.4987, 8.8608, 1.9309)
Luminance	0.0886 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A1231B #1B99A1

analogous

#A11B56 #A1231B #A1661B

triadic

#A1231B #1BA123 #231BA1

tetradic

#A1231B #56A11B #1B99A1 #661BA1

square

#A1231B #56A11B #1B99A1 #661BA1

split-complementary

#A1231B #1BA166 #1B56A1

monochromatic

#380C09 #6D1812 #A1231B #D52E24 #E25D54

Accessibility & contrast

On white

7.58

#A1231B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#A1231B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A1231B

7.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A1231B	#FFFFFF	#000000	##FFFFFF
##A1231B	1.00	7.58	2.77	7.58
#FFFFFF	7.58	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4218

Deuteranopia (green-blind)

#6A5E14

Tritanopia (blue-blind)

#B20023

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #a1231b;
/* rgb */ color: rgb(161, 35, 27);
/* oklch */ color: oklch(46.5% 0.163 28.8);

Tailwind

colors: {
  custom: {
    50: '#c66959',
    500: '#a1231b',
    950: '#000000',
  },
}

SCSS

$custom: #a1231b;
$custom-light: #c66959;
$custom-dark: #000000;

JSON

{
  "hex": "#a1231b",
  "rgb": {
    "r": 161,
    "g": 35,
    "b": 27
  },
  "hsl": {
    "h": 3.582,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.46517,
    "c": 0.16336,
    "h": 28.8
  },
  "luminance": 0.08858
}

Semantic roles & 50–950 ramp

primary

#A1231B

secondary

#52BEC5

accent

#E3EE3A

background

#FDF6F5

surface

#FAECE9

border

#D3C7C5

text

#150703

muted

#837A78

Preview Lab

Preview with #A1231B

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

Preview Lab → · Contrast checker → · Palette generator →