#A63331#A63331

#A63331 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.3% C 0.151 H 25.5°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#A63331
RGB	rgb(166, 51, 49)
HSL	hsl(1, 54%, 42%)
HSV	hsv(1, 70%, 65%)
CMYK	cmyk(0%, 69.3%, 70.5%, 34.9%)
CIE-LAB	lab(39.07, 46.90, 28.18)
CIE-LCH	lch(39.07, 54.71, 31.00°)
OKLab	oklab(49.28% 0.1366 0.0651)
OKLCH	oklch(49.28% 0.151 25.5)
XYZ	xyz(17.4660, 10.6989, 4.0505)
Luminance	0.1070 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63331 #31A4A6

analogous

#A63169 #A63331 #A66E31

triadic

#A63331 #31A633 #3331A6

tetradic

#A63331 #69A631 #31A4A6 #6E31A6

square

#A63331 #69A631 #31A4A6 #6E31A6

split-complementary

#A63331 #31A66E #3169A6

monochromatic

#471615 #772423 #A63331 #CA4D4A #D87B7A

Accessibility & contrast

On white

6.69

#A63331 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#A63331 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63331

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63331	#FFFFFF	#000000	##FFFFFF
##A63331	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534C30

Deuteranopia (green-blind)

#70652D

Tritanopia (blue-blind)

#B71134

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a63331;
/* rgb */ color: rgb(166, 51, 49);
/* oklch */ color: oklch(49.3% 0.151 25.5);

Tailwind

colors: {
  custom: {
    50: '#c87269',
    500: '#a63331',
    950: '#000000',
  },
}

SCSS

$custom: #a63331;
$custom-light: #c87269;
$custom-dark: #000000;

JSON

{
  "hex": "#a63331",
  "rgb": {
    "r": 166,
    "g": 51,
    "b": 49
  },
  "hsl": {
    "h": 1.026,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.49278,
    "c": 0.15131,
    "h": 25.5
  },
  "luminance": 0.10696
}

Semantic roles & 50–950 ramp

primary

#A63331

secondary

#73BFC0

accent

#DBDE4A

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140806

muted

#837B7A

Preview Lab

Preview with #A63331

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

Preview Lab → · Contrast checker → · Palette generator →