#C63740#C63740

#C63740 is a mid, vivid red. Relative luminance 0.151; OKLCH L 55.5% C 0.179 H 22.0°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#C63740
RGB	rgb(198, 55, 64)
HSL	hsl(356, 57%, 50%)
HSV	hsv(356, 72%, 78%)
CMYK	cmyk(0%, 72.2%, 67.7%, 22.4%)
CIE-LAB	lab(45.79, 56.51, 28.69)
CIE-LCH	lch(45.79, 63.37, 26.92°)
OKLab	oklab(55.45% 0.1662 0.0672)
OKLCH	oklch(55.45% 0.179 22)
XYZ	xyz(25.5831, 15.1121, 6.4193)
Luminance	0.1511 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63740 #37C6BD

analogous

#C63787 #C63740 #C67637

triadic

#C63740 #40C637 #3740C6

tetradic

#C63740 #87C637 #37C6BD #7637C6

square

#C63740 #87C637 #37C6BD #7637C6

split-complementary

#C63740 #37C676 #3787C6

monochromatic

#661C21 #962A31 #C63740 #D4666D #E2969A

Accessibility & contrast

On white

5.22

#C63740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#C63740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63740

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63740	#FFFFFF	#000000	##FFFFFF
##C63740	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60593F

Deuteranopia (green-blind)

#83783C

Tritanopia (blue-blind)

#D9003C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #c63740;
/* rgb */ color: rgb(198, 55, 64);
/* oklch */ color: oklch(55.5% 0.179 22.0);

Tailwind

colors: {
  custom: {
    50: '#df7875',
    500: '#c63740',
    950: '#000000',
  },
}

SCSS

$custom: #c63740;
$custom-light: #df7875;
$custom-dark: #000000;

JSON

{
  "hex": "#c63740",
  "rgb": {
    "r": 198,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 356.224,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55454,
    "c": 0.17922,
    "h": 22
  },
  "luminance": 0.15108
}

Semantic roles & 50–950 ramp

primary

#C63740

secondary

#8CCDC9

accent

#E0D648

background

#FEF7F7

surface

#FDEEED

border

#D5C9C8

text

#170A08

muted

#857C7B

Preview Lab

Preview with #C63740

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

Preview Lab → · Contrast checker → · Palette generator →