#A3231A#A3231A

#A3231A is a mid, vivid red. Relative luminance 0.091; OKLCH L 46.9% C 0.165 H 29.1°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#A3231A
RGB	rgb(163, 35, 26)
HSL	hsl(4, 72%, 37%)
HSV	hsv(4, 84%, 64%)
CMYK	cmyk(0%, 78.5%, 84%, 36.1%)
CIE-LAB	lab(36.11, 50.85, 38.06)
CIE-LCH	lch(36.11, 63.52, 36.81°)
OKLab	oklab(46.88% 0.1446 0.0805)
OKLCH	oklch(46.88% 0.165 29.1)
XYZ	xyz(15.8937, 9.0657, 1.8901)
Luminance	0.0906 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3231A #1A9AA3

analogous

#A31A55 #A3231A #A3681A

triadic

#A3231A #1AA323 #231AA3

tetradic

#A3231A #55A31A #1A9AA3 #681AA3

square

#A3231A #55A31A #1A9AA3 #681AA3

split-complementary

#A3231A #1AA368 #1A55A3

monochromatic

#390C09 #6E1812 #A3231A #D82E22 #E45D54

Accessibility & contrast

On white

7.47

#A3231A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#A3231A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A3231A

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3231A	#FFFFFF	#000000	##FFFFFF
##A3231A	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C4317

Deuteranopia (green-blind)

#6B5F13

Tritanopia (blue-blind)

#B40023

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #a3231a;
/* rgb */ color: rgb(163, 35, 26);
/* oklch */ color: oklch(46.9% 0.165 29.1);

Tailwind

colors: {
  custom: {
    50: '#c86a58',
    500: '#a3231a',
    950: '#000000',
  },
}

SCSS

$custom: #a3231a;
$custom-light: #c86a58;
$custom-dark: #000000;

JSON

{
  "hex": "#a3231a",
  "rgb": {
    "r": 163,
    "g": 35,
    "b": 26
  },
  "hsl": {
    "h": 3.942,
    "s": 72.487,
    "l": 37.059
  },
  "oklch": {
    "l": 0.46881,
    "c": 0.16547,
    "h": 29.1
  },
  "luminance": 0.09063
}

Semantic roles & 50–950 ramp

primary

#A3231A

secondary

#52BFC7

accent

#E3EF39

background

#FDF6F5

surface

#FBECE9

border

#D4C7C5

text

#150703

muted

#837A78

Preview Lab

Preview with #A3231A

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

Preview Lab → · Contrast checker → · Palette generator →