#A33931#A33931

#A33931 is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.5% C 0.142 H 27.7°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#A33931
RGB	rgb(163, 57, 49)
HSL	hsl(4, 54%, 42%)
HSV	hsv(4, 70%, 64%)
CMYK	cmyk(0%, 65%, 69.9%, 36.1%)
CIE-LAB	lab(39.47, 43.28, 28.53)
CIE-LCH	lch(39.47, 51.84, 33.39°)
OKLab	oklab(49.48% 0.1256 0.066)
OKLCH	oklch(49.48% 0.142 27.7)
XYZ	xyz(17.1235, 10.9369, 4.1145)
Luminance	0.1094 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33931 #319BA3

analogous

#A33162 #A33931 #A37231

triadic

#A33931 #31A339 #3931A3

tetradic

#A33931 #62A331 #319BA3 #7231A3

square

#A33931 #62A331 #319BA3 #7231A3

split-complementary

#A33931 #31A372 #3162A3

monochromatic

#451815 #742923 #A33931 #C85249 #D67F78

Accessibility & contrast

On white

6.59

#A33931 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#A33931 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33931

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33931	#FFFFFF	#000000	##FFFFFF
##A33931	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564E2F

Deuteranopia (green-blind)

#70662E

Tritanopia (blue-blind)

#B31F38

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a33931;
/* rgb */ color: rgb(163, 57, 49);
/* oklch */ color: oklch(49.5% 0.142 27.7);

Tailwind

colors: {
  custom: {
    50: '#c57569',
    500: '#a33931',
    950: '#000000',
  },
}

SCSS

$custom: #a33931;
$custom-light: #c57569;
$custom-dark: #000000;

JSON

{
  "hex": "#a33931",
  "rgb": {
    "r": 163,
    "g": 57,
    "b": 49
  },
  "hsl": {
    "h": 4.211,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.4948,
    "c": 0.14185,
    "h": 27.7
  },
  "luminance": 0.10935
}

Semantic roles & 50–950 ramp

primary

#A33931

secondary

#71B9BF

accent

#D3DD4B

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A33931

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

Preview Lab → · Contrast checker → · Palette generator →