#C63731#C63731

#C63731 is a mid, vivid red. Relative luminance 0.150; OKLCH L 55.2% C 0.181 H 27.3°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#C63731
RGB	rgb(198, 55, 49)
HSL	hsl(2, 60%, 48%)
HSV	hsv(2, 75%, 78%)
CMYK	cmyk(0%, 72.2%, 75.3%, 22.4%)
CIE-LAB	lab(45.58, 55.81, 37.21)
CIE-LCH	lch(45.58, 67.08, 33.69°)
OKLab	oklab(55.24% 0.1608 0.083)
OKLCH	oklch(55.24% 0.181 27.3)
XYZ	xyz(25.2122, 14.9638, 4.4659)
Luminance	0.1496 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63731 #31C0C6

analogous

#C63175 #C63731 #C68131

triadic

#C63731 #31C637 #3731C6

tetradic

#C63731 #75C631 #31C0C6 #8131C6

square

#C63731 #75C631 #31C0C6 #8131C6

split-complementary

#C63731 #31C681 #3175C6

monochromatic

#641C19 #952925 #C63731 #D7625D #E3928E

Accessibility & contrast

On white

5.26

#C63731 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#C63731 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63731

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63731	#FFFFFF	#000000	##FFFFFF
##C63731	1.00	5.26	3.99	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#61582F

Deuteranopia (green-blind)

#85772C

Tritanopia (blue-blind)

#DA0037

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #c63731;
/* rgb */ color: rgb(198, 55, 49);
/* oklch */ color: oklch(55.2% 0.181 27.3);

Tailwind

colors: {
  custom: {
    50: '#e0786a',
    500: '#c63731',
    950: '#000000',
  },
}

SCSS

$custom: #c63731;
$custom-light: #e0786a;
$custom-dark: #000000;

JSON

{
  "hex": "#c63731",
  "rgb": {
    "r": 198,
    "g": 55,
    "b": 49
  },
  "hsl": {
    "h": 2.416,
    "s": 60.324,
    "l": 48.431
  },
  "oklch": {
    "l": 0.55238,
    "c": 0.18094,
    "h": 27.3
  },
  "luminance": 0.1496
}

Semantic roles & 50–950 ramp

primary

#C63731

secondary

#85CBCE

accent

#DDE344

background

#FFF7F6

surface

#FEEEEB

border

#D6C9C6

text

#170A06

muted

#857C7A

Preview Lab

Preview with #C63731

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

Preview Lab → · Contrast checker → · Palette generator →