#A63631#A63631

#A63631 is a mid, vivid red. Relative luminance 0.110; OKLCH L 49.6% C 0.148 H 26.5°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#A63631
RGB	rgb(166, 54, 49)
HSL	hsl(3, 54%, 42%)
HSV	hsv(3, 70%, 65%)
CMYK	cmyk(0%, 67.5%, 70.5%, 34.9%)
CIE-LAB	lab(39.53, 45.65, 28.73)
CIE-LCH	lch(39.53, 53.93, 32.18°)
OKLab	oklab(49.62% 0.1327 0.0663)
OKLCH	oklch(49.62% 0.148 26.5)
XYZ	xyz(17.6013, 10.9696, 4.0957)
Luminance	0.1097 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63631 #31A1A6

analogous

#A63167 #A63631 #A67131

triadic

#A63631 #31A636 #3631A6

tetradic

#A63631 #67A631 #31A1A6 #7131A6

square

#A63631 #67A631 #31A1A6 #7131A6

split-complementary

#A63631 #31A671 #3167A6

monochromatic

#471715 #772723 #A63631 #CA504A #D87E7A

Accessibility & contrast

On white

6.58

#A63631 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#A63631 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63631

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63631	#FFFFFF	#000000	##FFFFFF
##A63631	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554E30

Deuteranopia (green-blind)

#71662E

Tritanopia (blue-blind)

#B61836

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a63631;
/* rgb */ color: rgb(166, 54, 49);
/* oklch */ color: oklch(49.6% 0.148 26.5);

Tailwind

colors: {
  custom: {
    50: '#c87369',
    500: '#a63631',
    950: '#000000',
  },
}

SCSS

$custom: #a63631;
$custom-light: #c87369;
$custom-dark: #000000;

JSON

{
  "hex": "#a63631",
  "rgb": {
    "r": 166,
    "g": 54,
    "b": 49
  },
  "hsl": {
    "h": 2.564,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.49623,
    "c": 0.14828,
    "h": 26.5
  },
  "luminance": 0.10967
}

Semantic roles & 50–950 ramp

primary

#A63631

secondary

#73BDC0

accent

#D7DE4A

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140806

muted

#837B7A

Preview Lab

Preview with #A63631

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

Preview Lab → · Contrast checker → · Palette generator →