#C63D33#C63D33

#C63D33 is a mid, vivid red. Relative luminance 0.156; OKLCH L 55.9% C 0.175 H 28.3°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#C63D33
RGB	rgb(198, 61, 51)
HSL	hsl(4, 59%, 49%)
HSV	hsv(4, 74%, 78%)
CMYK	cmyk(0%, 69.2%, 74.2%, 22.4%)
CIE-LAB	lab(46.43, 53.64, 37.01)
CIE-LCH	lch(46.43, 65.17, 34.60°)
OKLab	oklab(55.88% 0.1544 0.083)
OKLCH	oklch(55.88% 0.175 28.3)
XYZ	xyz(25.5579, 15.5861, 4.7940)
Luminance	0.1558 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63D33 #33BCC6

analogous

#C63373 #C63D33 #C68733

triadic

#C63D33 #33C63D #3D33C6

tetradic

#C63D33 #73C633 #33BCC6 #8733C6

square

#C63D33 #73C633 #33BCC6 #8733C6

split-complementary

#C63D33 #33C687 #3373C6

monochromatic

#651F1A #952E26 #C63D33 #D66860 #E39691

Accessibility & contrast

On white

5.10

#C63D33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#C63D33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63D33

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63D33	#FFFFFF	#000000	##FFFFFF
##C63D33	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645B31

Deuteranopia (green-blind)

#86792E

Tritanopia (blue-blind)

#DA0D3C

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #c63d33;
/* rgb */ color: rgb(198, 61, 51);
/* oklch */ color: oklch(55.9% 0.175 28.3);

Tailwind

colors: {
  custom: {
    50: '#e07b6b',
    500: '#c63d33',
    950: '#000000',
  },
}

SCSS

$custom: #c63d33;
$custom-light: #e07b6b;
$custom-dark: #000000;

JSON

{
  "hex": "#c63d33",
  "rgb": {
    "r": 198,
    "g": 61,
    "b": 51
  },
  "hsl": {
    "h": 4.082,
    "s": 59.036,
    "l": 48.824
  },
  "oklch": {
    "l": 0.55875,
    "c": 0.1753,
    "h": 28.3
  },
  "luminance": 0.15582
}

Semantic roles & 50–950 ramp

primary

#C63D33

secondary

#87C9CD

accent

#D8E246

background

#FEF7F6

surface

#FDEEEB

border

#D5C9C6

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C63D33

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

Preview Lab → · Contrast checker → · Palette generator →