#C63531#C63531

#C63531 is a mid, vivid red. Relative luminance 0.148; OKLCH L 55.0% C 0.183 H 26.8°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#C63531
RGB	rgb(198, 53, 49)
HSL	hsl(2, 60%, 48%)
HSV	hsv(2, 75%, 78%)
CMYK	cmyk(0%, 73.2%, 75.3%, 22.4%)
CIE-LAB	lab(45.33, 56.52, 36.92)
CIE-LCH	lch(45.33, 67.51, 33.16°)
OKLab	oklab(55.05% 0.163 0.0824)
OKLCH	oklch(55.05% 0.183 26.8)
XYZ	xyz(25.1191, 14.7776, 4.4349)
Luminance	0.1477 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63531 #31C2C6

analogous

#C63177 #C63531 #C67F31

triadic

#C63531 #31C635 #3531C6

tetradic

#C63531 #77C631 #31C2C6 #7F31C6

square

#C63531 #77C631 #31C2C6 #7F31C6

split-complementary

#C63531 #31C67F #3177C6

monochromatic

#641B19 #952825 #C63531 #D7615D #E3918E

Accessibility & contrast

On white

5.31

#C63531 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#C63531 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63531

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63531	#FFFFFF	#000000	##FFFFFF
##C63531	1.00	5.31	3.95	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60572F

Deuteranopia (green-blind)

#84772B

Tritanopia (blue-blind)

#DA0036

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #c63531;
/* rgb */ color: rgb(198, 53, 49);
/* oklch */ color: oklch(55.0% 0.183 26.8);

Tailwind

colors: {
  custom: {
    50: '#e0776a',
    500: '#c63531',
    950: '#000000',
  },
}

SCSS

$custom: #c63531;
$custom-light: #e0776a;
$custom-dark: #000000;

JSON

{
  "hex": "#c63531",
  "rgb": {
    "r": 198,
    "g": 53,
    "b": 49
  },
  "hsl": {
    "h": 1.611,
    "s": 60.324,
    "l": 48.431
  },
  "oklch": {
    "l": 0.55047,
    "c": 0.18265,
    "h": 26.8
  },
  "luminance": 0.14774
}

Semantic roles & 50–950 ramp

primary

#C63531

secondary

#85CCCE

accent

#DFE344

background

#FFF7F6

surface

#FEEEEB

border

#D6C9C6

text

#170906

muted

#857B7A

Preview Lab

Preview with #C63531

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

Preview Lab → · Contrast checker → · Palette generator →