#B63A2C#B63A2C

#B63A2C is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.7% C 0.163 H 29.9°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#B63A2C
RGB	rgb(182, 58, 44)
HSL	hsl(6, 61%, 44%)
HSV	hsv(6, 76%, 71%)
CMYK	cmyk(0%, 68.1%, 75.8%, 28.6%)
CIE-LAB	lab(43.00, 49.22, 36.35)
CIE-LCH	lch(43.00, 61.19, 36.45°)
OKLab	oklab(52.74% 0.1409 0.0809)
OKLCH	oklch(52.74% 0.163 29.9)
XYZ	xyz(21.2615, 13.1562, 3.8022)
Luminance	0.1315 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63A2C #2CA8B6

analogous

#B62C63 #B63A2C #B67F2C

triadic

#B63A2C #2CB63A #3A2CB6

tetradic

#B63A2C #63B62C #2CA8B6 #7F2CB6

square

#B63A2C #63B62C #2CA8B6 #7F2CB6

split-complementary

#B63A2C #2CB67F #2C63B6

monochromatic

#531B14 #852A20 #B63A2C #D4594C #E0877D

Accessibility & contrast

On white

5.78

#B63A2C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#B63A2C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63A2C

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63A2C	#FFFFFF	#000000	##FFFFFF
##B63A2C	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5429

Deuteranopia (green-blind)

#7C7027

Tritanopia (blue-blind)

#C81338

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63a2c;
/* rgb */ color: rgb(182, 58, 44);
/* oklch */ color: oklch(52.7% 0.163 29.9);

Tailwind

colors: {
  custom: {
    50: '#d47766',
    500: '#b63a2c',
    950: '#000000',
  },
}

SCSS

$custom: #b63a2c;
$custom-light: #d47766;
$custom-dark: #000000;

JSON

{
  "hex": "#b63a2c",
  "rgb": {
    "r": 182,
    "g": 58,
    "b": 44
  },
  "hsl": {
    "h": 6.087,
    "s": 61.062,
    "l": 44.314
  },
  "oklch": {
    "l": 0.52744,
    "c": 0.1625,
    "h": 29.9
  },
  "luminance": 0.13153
}

Semantic roles & 50–950 ramp

primary

#B63A2C

secondary

#76C0C8

accent

#D4E444

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63A2C

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

Preview Lab → · Contrast checker → · Palette generator →