#B63A2B#B63A2B

#B63A2B is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.7% C 0.163 H 30.2°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#B63A2B
RGB	rgb(182, 58, 43)
HSL	hsl(6, 62%, 44%)
HSV	hsv(6, 76%, 71%)
CMYK	cmyk(0%, 68.1%, 76.4%, 28.6%)
CIE-LAB	lab(42.99, 49.18, 36.89)
CIE-LCH	lch(42.99, 61.48, 36.88°)
OKLab	oklab(52.73% 0.1406 0.0818)
OKLCH	oklch(52.73% 0.163 30.2)
XYZ	xyz(21.2429, 13.1488, 3.7044)
Luminance	0.1315 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63A2B #2BA7B6

analogous

#B62B62 #B63A2B #B6802B

triadic

#B63A2B #2BB63A #3A2BB6

tetradic

#B63A2B #62B62B #2BA7B6 #802BB6

square

#B63A2B #62B62B #2BA7B6 #802BB6

split-complementary

#B63A2B #2BB680 #2B62B6

monochromatic

#531A14 #842A1F #B63A2B #D4594A #E0867B

Accessibility & contrast

On white

5.79

#B63A2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#B63A2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63A2B

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63A2B	#FFFFFF	#000000	##FFFFFF
##B63A2B	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5428

Deuteranopia (green-blind)

#7C7026

Tritanopia (blue-blind)

#C81237

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b63a2b;
/* rgb */ color: rgb(182, 58, 43);
/* oklch */ color: oklch(52.7% 0.163 30.2);

Tailwind

colors: {
  custom: {
    50: '#d47765',
    500: '#b63a2b',
    950: '#000000',
  },
}

SCSS

$custom: #b63a2b;
$custom-light: #d47765;
$custom-dark: #000000;

JSON

{
  "hex": "#b63a2b",
  "rgb": {
    "r": 182,
    "g": 58,
    "b": 43
  },
  "hsl": {
    "h": 6.475,
    "s": 61.778,
    "l": 44.118
  },
  "oklch": {
    "l": 0.52732,
    "c": 0.16268,
    "h": 30.2
  },
  "luminance": 0.13146
}

Semantic roles & 50–950 ramp

primary

#B63A2B

secondary

#75BFC8

accent

#D3E543

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63A2B

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

Preview Lab → · Contrast checker → · Palette generator →