#C63728#C63728

#C63728 is a mid, vivid red. Relative luminance 0.149; OKLCH L 55.1% C 0.182 H 29.9°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#C63728
RGB	rgb(198, 55, 40)
HSL	hsl(6, 66%, 47%)
HSV	hsv(6, 80%, 78%)
CMYK	cmyk(0%, 72.2%, 79.8%, 22.4%)
CIE-LAB	lab(45.49, 55.49, 42.04)
CIE-LCH	lch(45.49, 69.62, 37.15°)
OKLab	oklab(55.14% 0.158 0.0909)
OKLCH	oklch(55.14% 0.182 29.9)
XYZ	xyz(25.0409, 14.8952, 3.5636)
Luminance	0.1489 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63728 #28B7C6

analogous

#C62868 #C63728 #C68628

triadic

#C63728 #28C637 #3728C6

tetradic

#C63728 #68C628 #28B7C6 #8628C6

square

#C63728 #68C628 #28B7C6 #8628C6

split-complementary

#C63728 #28C686 #2868C6

monochromatic

#601B13 #93291E #C63728 #DC5D50 #E68C83

Accessibility & contrast

On white

5.28

#C63728 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#C63728 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63728

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63728	#FFFFFF	#000000	##FFFFFF
##C63728	1.00	5.28	3.98	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625825

Deuteranopia (green-blind)

#857721

Tritanopia (blue-blind)

#DA0035

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #c63728;
/* rgb */ color: rgb(198, 55, 40);
/* oklch */ color: oklch(55.1% 0.182 29.9);

Tailwind

colors: {
  custom: {
    50: '#e17863',
    500: '#c63728',
    950: '#000000',
  },
}

SCSS

$custom: #c63728;
$custom-light: #e17863;
$custom-dark: #000000;

JSON

{
  "hex": "#c63728",
  "rgb": {
    "r": 198,
    "g": 55,
    "b": 40
  },
  "hsl": {
    "h": 5.696,
    "s": 66.387,
    "l": 46.667
  },
  "oklch": {
    "l": 0.55138,
    "c": 0.18227,
    "h": 29.9
  },
  "luminance": 0.14891
}

Semantic roles & 50–950 ramp

primary

#C63728

secondary

#7BC7CF

accent

#D9E93E

background

#FFF7F6

surface

#FEEEEB

border

#D6C9C6

text

#170905

muted

#857B7A

Preview Lab

Preview with #C63728

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

Preview Lab → · Contrast checker → · Palette generator →