#A63237#A63237

#A63237 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.3% C 0.152 H 22.4°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#A63237
RGB	rgb(166, 50, 55)
HSL	hsl(357, 54%, 42%)
HSV	hsv(357, 70%, 65%)
CMYK	cmyk(0%, 69.9%, 66.9%, 34.9%)
CIE-LAB	lab(39.01, 47.64, 24.45)
CIE-LCH	lch(39.01, 53.55, 27.17°)
OKLab	oklab(49.27% 0.1402 0.0577)
OKLCH	oklch(49.27% 0.152 22.4)
XYZ	xyz(17.5579, 10.6666, 4.7480)
Luminance	0.1066 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63237 #32A6A1

analogous

#A63271 #A63237 #A66732

triadic

#A63237 #37A632 #3237A6

tetradic

#A63237 #71A632 #32A6A1 #6732A6

square

#A63237 #71A632 #32A6A1 #6732A6

split-complementary

#A63237 #32A667 #3271A6

monochromatic

#481618 #772427 #A63237 #C94C51 #D77B7F

Accessibility & contrast

On white

6.70

#A63237 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#A63237 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63237

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63237	#FFFFFF	#000000	##FFFFFF
##A63237	1.00	6.70	3.13	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524C36

Deuteranopia (green-blind)

#6F6534

Tritanopia (blue-blind)

#B61135

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a63237;
/* rgb */ color: rgb(166, 50, 55);
/* oklch */ color: oklch(49.3% 0.152 22.4);

Tailwind

colors: {
  custom: {
    50: '#c7726d',
    500: '#a63237',
    950: '#000000',
  },
}

SCSS

$custom: #a63237;
$custom-light: #c7726d;
$custom-dark: #000000;

JSON

{
  "hex": "#a63237",
  "rgb": {
    "r": 166,
    "g": 50,
    "b": 55
  },
  "hsl": {
    "h": 357.414,
    "s": 53.704,
    "l": 42.353
  },
  "oklch": {
    "l": 0.49267,
    "c": 0.15161,
    "h": 22.4
  },
  "luminance": 0.10664
}

Semantic roles & 50–950 ramp

primary

#A63237

secondary

#74C0BD

accent

#DDD74B

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140807

muted

#837B7A

Preview Lab

Preview with #A63237

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

Preview Lab → · Contrast checker → · Palette generator →