#C63D2B#C63D2B

#C63D2B is a mid, vivid red. Relative luminance 0.155; OKLCH L 55.8% C 0.177 H 30.7°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#C63D2B
RGB	rgb(198, 61, 43)
HSL	hsl(7, 64%, 47%)
HSV	hsv(7, 78%, 78%)
CMYK	cmyk(0%, 69.2%, 78.3%, 22.4%)
CIE-LAB	lab(46.34, 53.34, 41.31)
CIE-LCH	lch(46.34, 67.46, 37.76°)
OKLab	oklab(55.78% 0.1518 0.0903)
OKLCH	oklch(55.78% 0.177 30.7)
XYZ	xyz(25.3964, 15.5215, 3.9437)
Luminance	0.1552 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63D2B #2BB4C6

analogous

#C62B66 #C63D2B #C68B2B

triadic

#C63D2B #2BC63D #3D2BC6

tetradic

#C63D2B #66C62B #2BB4C6 #8B2BC6

square

#C63D2B #66C62B #2BB4C6 #8B2BC6

split-complementary

#C63D2B #2BC68B #2B66C6

monochromatic

#611E15 #942E20 #C63D2B #DA6454 #E59287

Accessibility & contrast

On white

5.12

#C63D2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#C63D2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63D2B

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63D2B	#FFFFFF	#000000	##FFFFFF
##C63D2B	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#655B28

Deuteranopia (green-blind)

#877925

Tritanopia (blue-blind)

#DA093A

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #c63d2b;
/* rgb */ color: rgb(198, 61, 43);
/* oklch */ color: oklch(55.8% 0.177 30.7);

Tailwind

colors: {
  custom: {
    50: '#e07b66',
    500: '#c63d2b',
    950: '#000000',
  },
}

SCSS

$custom: #c63d2b;
$custom-light: #e07b66;
$custom-dark: #000000;

JSON

{
  "hex": "#c63d2b",
  "rgb": {
    "r": 198,
    "g": 61,
    "b": 43
  },
  "hsl": {
    "h": 6.968,
    "s": 64.315,
    "l": 47.255
  },
  "oklch": {
    "l": 0.55783,
    "c": 0.17662,
    "h": 30.7
  },
  "luminance": 0.15518
}

Semantic roles & 50–950 ramp

primary

#C63D2B

secondary

#7FC5CE

accent

#D4E740

background

#FFF7F6

surface

#FEEEEB

border

#D6C9C6

text

#170A06

muted

#857C7A

Preview Lab

Preview with #C63D2B

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

Preview Lab → · Contrast checker → · Palette generator →