#C63B3D#C63B3D

#C63B3D is a mid, vivid red. Relative luminance 0.155; OKLCH L 55.8% C 0.176 H 24.2°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#C63B3D
RGB	rgb(198, 59, 61)
HSL	hsl(359, 55%, 50%)
HSV	hsv(359, 70%, 78%)
CMYK	cmyk(0%, 70.2%, 69.2%, 22.4%)
CIE-LAB	lab(46.28, 54.88, 31.07)
CIE-LCH	lch(46.28, 63.06, 29.51°)
OKLab	oklab(55.81% 0.1604 0.072)
OKLCH	oklch(55.81% 0.176 24.2)
XYZ	xyz(25.6978, 15.4744, 6.0477)
Luminance	0.1547 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63B3D #3BC6C4

analogous

#C63B82 #C63B3D #C67F3B

triadic

#C63B3D #3DC63B #3B3DC6

tetradic

#C63B3D #82C63B #3BC6C4 #7F3BC6

square

#C63B3D #82C63B #3BC6C4 #7F3BC6

split-complementary

#C63B3D #3BC67F #3B82C6

monochromatic

#681E1F #982C2E #C63B3D #D46A6C #E29A9B

Accessibility & contrast

On white

5.13

#C63B3D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.09

#C63B3D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63B3D

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63B3D	#FFFFFF	#000000	##FFFFFF
##C63B3D	1.00	5.13	4.09	5.13
#FFFFFF	5.13	1.00	21.00	1.00
#000000	4.09	21.00	1.00	21.00
##FFFFFF	5.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625B3C

Deuteranopia (green-blind)

#857939

Tritanopia (blue-blind)

#D90B3D

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #c63b3d;
/* rgb */ color: rgb(198, 59, 61);
/* oklch */ color: oklch(55.8% 0.176 24.2);

Tailwind

colors: {
  custom: {
    50: '#df7a72',
    500: '#c63b3d',
    950: '#000000',
  },
}

SCSS

$custom: #c63b3d;
$custom-light: #df7a72;
$custom-dark: #000000;

JSON

{
  "hex": "#c63b3d",
  "rgb": {
    "r": 198,
    "g": 59,
    "b": 61
  },
  "hsl": {
    "h": 359.137,
    "s": 54.941,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55805,
    "c": 0.17577,
    "h": 24.2
  },
  "luminance": 0.15471
}

Semantic roles & 50–950 ramp

primary

#C63B3D

secondary

#8FCDCD

accent

#DEDC4A

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A08

muted

#857C7B

Preview Lab

Preview with #C63B3D

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

Preview Lab → · Contrast checker → · Palette generator →