#C63D37#C63D37

#C63D37 is a mid, vivid red. Relative luminance 0.156; OKLCH L 55.9% C 0.175 H 26.9°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#C63D37
RGB	rgb(198, 61, 55)
HSL	hsl(3, 57%, 50%)
HSV	hsv(3, 72%, 78%)
CMYK	cmyk(0%, 69.2%, 72.2%, 22.4%)
CIE-LAB	lab(46.48, 53.82, 34.79)
CIE-LCH	lch(46.48, 64.09, 32.88°)
OKLab	oklab(55.93% 0.1558 0.0791)
OKLCH	oklch(55.93% 0.175 26.9)
XYZ	xyz(25.6499, 15.6229, 5.2786)
Luminance	0.1562 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63D37 #37C0C6

analogous

#C63779 #C63D37 #C68437

triadic

#C63D37 #37C63D #3D37C6

tetradic

#C63D37 #79C637 #37C0C6 #8437C6

square

#C63D37 #79C637 #37C0C6 #8437C6

split-complementary

#C63D37 #37C684 #3779C6

monochromatic

#661F1C #962E2A #C63D37 #D46A66 #E29996

Accessibility & contrast

On white

5.09

#C63D37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#C63D37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63D37

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63D37	#FFFFFF	#000000	##FFFFFF
##C63D37	1.00	5.09	4.12	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645B35

Deuteranopia (green-blind)

#867932

Tritanopia (blue-blind)

#DA0F3D

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #c63d37;
/* rgb */ color: rgb(198, 61, 55);
/* oklch */ color: oklch(55.9% 0.175 26.9);

Tailwind

colors: {
  custom: {
    50: '#e07b6e',
    500: '#c63d37',
    950: '#000000',
  },
}

SCSS

$custom: #c63d37;
$custom-light: #e07b6e;
$custom-dark: #000000;

JSON

{
  "hex": "#c63d37",
  "rgb": {
    "r": 198,
    "g": 61,
    "b": 55
  },
  "hsl": {
    "h": 2.517,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55927,
    "c": 0.17468,
    "h": 26.9
  },
  "luminance": 0.15619
}

Semantic roles & 50–950 ramp

primary

#C63D37

secondary

#8CCACD

accent

#D9E048

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C63D37

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

Preview Lab → · Contrast checker → · Palette generator →