#B63B2B#B63B2B

#B63B2B is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.162 H 30.5°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#B63B2B
RGB	rgb(182, 59, 43)
HSL	hsl(7, 62%, 44%)
HSV	hsv(7, 76%, 71%)
CMYK	cmyk(0%, 67.6%, 76.4%, 28.6%)
CIE-LAB	lab(43.14, 48.77, 37.06)
CIE-LCH	lch(43.14, 61.25, 37.23°)
OKLab	oklab(52.85% 0.1393 0.0822)
OKLCH	oklch(52.85% 0.162 30.5)
XYZ	xyz(21.2938, 13.2506, 3.7214)
Luminance	0.1325 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63B2B #2BA6B6

analogous

#B62B61 #B63B2B #B6802B

triadic

#B63B2B #2BB63B #3B2BB6

tetradic

#B63B2B #61B62B #2BA6B6 #802BB6

square

#B63B2B #61B62B #2BA6B6 #802BB6

split-complementary

#B63B2B #2BB680 #2B61B6

monochromatic

#531B14 #842B1F #B63B2B #D45A4A #E0877B

Accessibility & contrast

On white

5.75

#B63B2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B63B2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63B2B

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63B2B	#FFFFFF	#000000	##FFFFFF
##B63B2B	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5528

Deuteranopia (green-blind)

#7D7026

Tritanopia (blue-blind)

#C81538

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63b2b;
/* rgb */ color: rgb(182, 59, 43);
/* oklch */ color: oklch(52.8% 0.162 30.5);

Tailwind

colors: {
  custom: {
    50: '#d47865',
    500: '#b63b2b',
    950: '#000000',
  },
}

SCSS

$custom: #b63b2b;
$custom-light: #d47865;
$custom-dark: #000000;

JSON

{
  "hex": "#b63b2b",
  "rgb": {
    "r": 182,
    "g": 59,
    "b": 43
  },
  "hsl": {
    "h": 6.906,
    "s": 61.778,
    "l": 44.118
  },
  "oklch": {
    "l": 0.52846,
    "c": 0.16175,
    "h": 30.5
  },
  "luminance": 0.13247
}

Semantic roles & 50–950 ramp

primary

#B63B2B

secondary

#75BFC8

accent

#D2E543

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63B2B

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

Preview Lab → · Contrast checker → · Palette generator →