#B63A33#B63A33

#B63A33 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.161 H 27.3°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#B63A33
RGB	rgb(182, 58, 51)
HSL	hsl(3, 56%, 46%)
HSV	hsv(3, 72%, 71%)
CMYK	cmyk(0%, 68.1%, 72%, 28.6%)
CIE-LAB	lab(43.08, 49.53, 32.44)
CIE-LCH	lch(43.08, 59.21, 33.22°)
OKLab	oklab(52.84% 0.1434 0.074)
OKLCH	oklch(52.84% 0.161 27.3)
XYZ	xyz(21.4043, 13.2133, 4.5547)
Luminance	0.1321 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63A33 #33AFB6

analogous

#B6336D #B63A33 #B67B33

triadic

#B63A33 #33B63A #3A33B6

tetradic

#B63A33 #6DB633 #33AFB6 #7B33B6

square

#B63A33 #6DB633 #33AFB6 #7B33B6

split-complementary

#B63A33 #33B67B #336DB6

monochromatic

#561C18 #862B26 #B63A33 #D05D56 #DD8B86

Accessibility & contrast

On white

5.77

#B63A33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#B63A33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63A33

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63A33	#FFFFFF	#000000	##FFFFFF
##B63A33	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5531

Deuteranopia (green-blind)

#7C702F

Tritanopia (blue-blind)

#C81539

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63a33;
/* rgb */ color: rgb(182, 58, 51);
/* oklch */ color: oklch(52.8% 0.161 27.3);

Tailwind

colors: {
  custom: {
    50: '#d4776b',
    500: '#b63a33',
    950: '#000000',
  },
}

SCSS

$custom: #b63a33;
$custom-light: #d4776b;
$custom-dark: #000000;

JSON

{
  "hex": "#b63a33",
  "rgb": {
    "r": 182,
    "g": 58,
    "b": 51
  },
  "hsl": {
    "h": 3.206,
    "s": 56.223,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52835,
    "c": 0.16131,
    "h": 27.3
  },
  "luminance": 0.1321
}

Semantic roles & 50–950 ramp

primary

#B63A33

secondary

#7EC3C7

accent

#D7E048

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63A33

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

Preview Lab → · Contrast checker → · Palette generator →