#C63A37#C63A37

#C63A37 is a mid, vivid red. Relative luminance 0.153; OKLCH L 55.6% C 0.177 H 26.1°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#C63A37
RGB	rgb(198, 58, 55)
HSL	hsl(1, 57%, 50%)
HSV	hsv(1, 72%, 78%)
CMYK	cmyk(0%, 70.7%, 72.2%, 22.4%)
CIE-LAB	lab(46.06, 54.97, 34.31)
CIE-LCH	lch(46.06, 64.79, 31.97°)
OKLab	oklab(55.62% 0.1594 0.078)
OKLCH	oklch(55.62% 0.177 26.1)
XYZ	xyz(25.4942, 15.3115, 5.2267)
Luminance	0.1531 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63A37 #37C3C6

analogous

#C6377B #C63A37 #C68237

triadic

#C63A37 #37C63A #3A37C6

tetradic

#C63A37 #7BC637 #37C3C6 #8237C6

square

#C63A37 #7BC637 #37C3C6 #8237C6

split-complementary

#C63A37 #37C682 #377BC6

monochromatic

#661E1C #962C2A #C63A37 #D46866 #E29796

Accessibility & contrast

On white

5.17

#C63A37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#C63A37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63A37

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63A37	#FFFFFF	#000000	##FFFFFF
##C63A37	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625A35

Deuteranopia (green-blind)

#857832

Tritanopia (blue-blind)

#DA023B

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #c63a37;
/* rgb */ color: rgb(198, 58, 55);
/* oklch */ color: oklch(55.6% 0.177 26.1);

Tailwind

colors: {
  custom: {
    50: '#e0796e',
    500: '#c63a37',
    950: '#000000',
  },
}

SCSS

$custom: #c63a37;
$custom-light: #e0796e;
$custom-dark: #000000;

JSON

{
  "hex": "#c63a37",
  "rgb": {
    "r": 198,
    "g": 58,
    "b": 55
  },
  "hsl": {
    "h": 1.259,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55615,
    "c": 0.17744,
    "h": 26.1
  },
  "luminance": 0.15308
}

Semantic roles & 50–950 ramp

primary

#C63A37

secondary

#8CCCCD

accent

#DDE048

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C63A37

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

Preview Lab → · Contrast checker → · Palette generator →