#B63B38#B63B38

#B63B38 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.0% C 0.160 H 25.6°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#B63B38
RGB	rgb(182, 59, 56)
HSL	hsl(1, 53%, 47%)
HSV	hsv(1, 69%, 71%)
CMYK	cmyk(0%, 67.6%, 69.2%, 28.6%)
CIE-LAB	lab(43.30, 49.37, 29.76)
CIE-LCH	lch(43.30, 57.65, 31.08°)
OKLab	oklab(53.02% 0.1439 0.069)
OKLCH	oklch(53.02% 0.16 25.6)
XYZ	xyz(21.5715, 13.3616, 5.1838)
Luminance	0.1336 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63B38 #38B3B6

analogous

#B63874 #B63B38 #B67A38

triadic

#B63B38 #38B63B #3B38B6

tetradic

#B63B38 #74B638 #38B3B6 #7A38B6

square

#B63B38 #74B638 #38B3B6 #7A38B6

split-complementary

#B63B38 #38B67A #3874B6

monochromatic

#581D1B #872C2A #B63B38 #CD605E #DC8E8D

Accessibility & contrast

On white

5.72

#B63B38 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B63B38 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63B38

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63B38	#FFFFFF	#000000	##FFFFFF
##B63B38	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5537

Deuteranopia (green-blind)

#7C7034

Tritanopia (blue-blind)

#C8193C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63b38;
/* rgb */ color: rgb(182, 59, 56);
/* oklch */ color: oklch(53.0% 0.160 25.6);

Tailwind

colors: {
  custom: {
    50: '#d3786f',
    500: '#b63b38',
    950: '#000000',
  },
}

SCSS

$custom: #b63b38;
$custom-light: #d3786f;
$custom-dark: #000000;

JSON

{
  "hex": "#b63b38",
  "rgb": {
    "r": 182,
    "g": 59,
    "b": 56
  },
  "hsl": {
    "h": 1.429,
    "s": 52.941,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53022,
    "c": 0.15957,
    "h": 25.6
  },
  "luminance": 0.13359
}

Semantic roles & 50–950 ramp

primary

#B63B38

secondary

#84C5C6

accent

#D9DC4B

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63B38

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

Preview Lab → · Contrast checker → · Palette generator →