#C63F37#C63F37

#C63F37 is a mid, vivid red. Relative luminance 0.158; OKLCH L 56.1% C 0.173 H 27.5°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#C63F37
RGB	rgb(198, 63, 55)
HSL	hsl(3, 57%, 50%)
HSV	hsv(3, 72%, 78%)
CMYK	cmyk(0%, 68.2%, 72.2%, 22.4%)
CIE-LAB	lab(46.76, 53.03, 35.12)
CIE-LCH	lch(46.76, 63.61, 33.52°)
OKLab	oklab(56.14% 0.1533 0.0798)
OKLCH	oklch(56.14% 0.173 27.5)
XYZ	xyz(25.7586, 15.8404, 5.3148)
Luminance	0.1584 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63F37 #37BEC6

analogous

#C63776 #C63F37 #C68737

triadic

#C63F37 #37C63F #3F37C6

tetradic

#C63F37 #76C637 #37BEC6 #8737C6

square

#C63F37 #76C637 #37BEC6 #8737C6

split-complementary

#C63F37 #37C687 #3776C6

monochromatic

#66211C #96302A #C63F37 #D46C66 #E29A96

Accessibility & contrast

On white

5.04

#C63F37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#C63F37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63F37

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63F37	#FFFFFF	#000000	##FFFFFF
##C63F37	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#655C35

Deuteranopia (green-blind)

#877A32

Tritanopia (blue-blind)

#DA153E

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #c63f37;
/* rgb */ color: rgb(198, 63, 55);
/* oklch */ color: oklch(56.1% 0.173 27.5);

Tailwind

colors: {
  custom: {
    50: '#df7c6e',
    500: '#c63f37',
    950: '#000000',
  },
}

SCSS

$custom: #c63f37;
$custom-light: #df7c6e;
$custom-dark: #000000;

JSON

{
  "hex": "#c63f37",
  "rgb": {
    "r": 198,
    "g": 63,
    "b": 55
  },
  "hsl": {
    "h": 3.357,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.56143,
    "c": 0.1728,
    "h": 27.5
  },
  "luminance": 0.15837
}

Semantic roles & 50–950 ramp

primary

#C63F37

secondary

#8CC9CD

accent

#D7E048

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C63F37

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

Preview Lab → · Contrast checker → · Palette generator →