#C63B37#C63B37

#C63B37 is a mid, vivid red. Relative luminance 0.154; OKLCH L 55.7% C 0.177 H 26.3°. Best body text is #FFFFFF at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#C63B37
RGB	rgb(198, 59, 55)
HSL	hsl(2, 57%, 50%)
HSV	hsv(2, 72%, 78%)
CMYK	cmyk(0%, 70.2%, 72.2%, 22.4%)
CIE-LAB	lab(46.20, 54.59, 34.47)
CIE-LCH	lch(46.20, 64.56, 32.27°)
OKLab	oklab(55.72% 0.1582 0.0784)
OKLCH	oklch(55.72% 0.177 26.3)
XYZ	xyz(25.5451, 15.4133, 5.2437)
Luminance	0.1541 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63B37 #37C2C6

analogous

#C6377B #C63B37 #C68237

triadic

#C63B37 #37C63B #3B37C6

tetradic

#C63B37 #7BC637 #37C2C6 #8237C6

square

#C63B37 #7BC637 #37C2C6 #8237C6

split-complementary

#C63B37 #37C682 #377BC6

monochromatic

#661E1C #962D2A #C63B37 #D46966 #E29896

Accessibility & contrast

On white

5.14

#C63B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#C63B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63B37

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63B37	#FFFFFF	#000000	##FFFFFF
##C63B37	1.00	5.14	4.08	5.14
#FFFFFF	5.14	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635A35

Deuteranopia (green-blind)

#857832

Tritanopia (blue-blind)

#DA073C

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #c63b37;
/* rgb */ color: rgb(198, 59, 55);
/* oklch */ color: oklch(55.7% 0.177 26.3);

Tailwind

colors: {
  custom: {
    50: '#e07a6e',
    500: '#c63b37',
    950: '#000000',
  },
}

SCSS

$custom: #c63b37;
$custom-light: #e07a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#c63b37",
  "rgb": {
    "r": 198,
    "g": 59,
    "b": 55
  },
  "hsl": {
    "h": 1.678,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55718,
    "c": 0.17653,
    "h": 26.3
  },
  "luminance": 0.1541
}

Semantic roles & 50–950 ramp

primary

#C63B37

secondary

#8CCBCD

accent

#DCE048

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C63B37

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

Preview Lab → · Contrast checker → · Palette generator →