#C63B3F#C63B3F

#C63B3F is a mid, vivid red. Relative luminance 0.155; OKLCH L 55.8% C 0.176 H 23.4°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#C63B3F
RGB	rgb(198, 59, 63)
HSL	hsl(358, 55%, 50%)
HSV	hsv(358, 70%, 78%)
CMYK	cmyk(0%, 70.2%, 68.2%, 22.4%)
CIE-LAB	lab(46.31, 54.98, 29.92)
CIE-LCH	lch(46.31, 62.59, 28.56°)
OKLab	oklab(55.84% 0.1611 0.0697)
OKLCH	oklch(55.84% 0.176 23.4)
XYZ	xyz(25.7526, 15.4964, 6.3367)
Luminance	0.1549 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63B3F #3BC6C2

analogous

#C63B85 #C63B3F #C67C3B

triadic

#C63B3F #3FC63B #3B3FC6

tetradic

#C63B3F #85C63B #3BC6C2 #7C3BC6

square

#C63B3F #85C63B #3BC6C2 #7C3BC6

split-complementary

#C63B3F #3BC67C #3B85C6

monochromatic

#681E20 #982C2F #C63B3F #D46A6D #E29A9C

Accessibility & contrast

On white

5.12

#C63B3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#C63B3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63B3F

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63B3F	#FFFFFF	#000000	##FFFFFF
##C63B3F	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)

#625B3E

Deuteranopia (green-blind)

#85793B

Tritanopia (blue-blind)

#D90C3E

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #c63b3f;
/* rgb */ color: rgb(198, 59, 63);
/* oklch */ color: oklch(55.8% 0.176 23.4);

Tailwind

colors: {
  custom: {
    50: '#df7a74',
    500: '#c63b3f',
    950: '#000000',
  },
}

SCSS

$custom: #c63b3f;
$custom-light: #df7a74;
$custom-dark: #000000;

JSON

{
  "hex": "#c63b3f",
  "rgb": {
    "r": 198,
    "g": 59,
    "b": 63
  },
  "hsl": {
    "h": 358.273,
    "s": 54.941,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55837,
    "c": 0.17555,
    "h": 23.4
  },
  "luminance": 0.15493
}

Semantic roles & 50–950 ramp

primary

#C63B3F

secondary

#8FCDCC

accent

#DEDA4A

background

#FEF7F7

surface

#FDEEED

border

#D5C9C8

text

#170A08

muted

#857C7B

Preview Lab

Preview with #C63B3F

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

Preview Lab → · Contrast checker → · Palette generator →