#C42828#C42828

#C42828 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.5% C 0.192 H 26.7°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#C42828
RGB	rgb(196, 40, 40)
HSL	hsl(0, 66%, 46%)
HSV	hsv(0, 80%, 77%)
CMYK	cmyk(0%, 79.6%, 79.6%, 23.1%)
CIE-LAB	lab(43.38, 59.70, 39.78)
CIE-LCH	lch(43.38, 71.75, 33.68°)
OKLab	oklab(53.49% 0.1714 0.0861)
OKLCH	oklch(53.49% 0.192 26.7)
XYZ	xyz(23.9097, 13.4104, 3.3366)
Luminance	0.1341 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C42828 #28C4C4

analogous

#C42876 #C42828 #C47628

triadic

#C42828 #28C428 #2828C4

tetradic

#C42828 #76C428 #28C4C4 #7628C4

square

#C42828 #76C428 #28C4C4 #7628C4

split-complementary

#C42828 #28C476 #2876C4

monochromatic

#5E1313 #911E1E #C42828 #DB4E4E #E58181

Accessibility & contrast

On white

5.70

#C42828 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#C42828 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C42828

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C42828	#FFFFFF	#000000	##FFFFFF
##C42828	1.00	5.70	3.68	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5126

Deuteranopia (green-blind)

#807321

Tritanopia (blue-blind)

#D8002B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #c42828;
/* rgb */ color: rgb(196, 40, 40);
/* oklch */ color: oklch(53.5% 0.192 26.7);

Tailwind

colors: {
  custom: {
    50: '#e07163',
    500: '#c42828',
    950: '#000000',
  },
}

SCSS

$custom: #c42828;
$custom-light: #e07163;
$custom-dark: #000000;

JSON

{
  "hex": "#c42828",
  "rgb": {
    "r": 196,
    "g": 40,
    "b": 40
  },
  "hsl": {
    "h": 0,
    "s": 66.102,
    "l": 46.275
  },
  "oklch": {
    "l": 0.53493,
    "c": 0.19186,
    "h": 26.7
  },
  "luminance": 0.13407
}

Semantic roles & 50–950 ramp

primary

#C42828

secondary

#7ACECE

accent

#E9E93F

background

#FFF7F5

surface

#FEEDEA

border

#D6C8C6

text

#170905

muted

#857B79

Preview Lab

Preview with #C42828

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

Preview Lab → · Contrast checker → · Palette generator →