#C42E1F#C42E1F

#C42E1F is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.9% C 0.189 H 30.0°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#C42E1F
RGB	rgb(196, 46, 31)
HSL	hsl(5, 73%, 45%)
HSV	hsv(5, 84%, 77%)
CMYK	cmyk(0%, 76.5%, 84.2%, 23.1%)
CIE-LAB	lab(43.93, 57.66, 45.05)
CIE-LCH	lch(43.93, 73.17, 38.00°)
OKLab	oklab(53.88% 0.1633 0.0945)
OKLCH	oklch(53.88% 0.189 30)
XYZ	xyz(23.9922, 13.7925, 2.6950)
Luminance	0.1379 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C42E1F #1FB5C4

analogous

#C41F62 #C42E1F #C4811F

triadic

#C42E1F #1FC42E #2E1FC4

tetradic

#C42E1F #62C41F #1FB5C4 #811FC4

square

#C42E1F #62C41F #1FB5C4 #811FC4

split-complementary

#C42E1F #1FC481 #1F62C4

monochromatic

#5A150E #8F2217 #C42E1F #E14E3F #E97F74

Accessibility & contrast

On white

5.59

#C42E1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#C42E1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C42E1F

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C42E1F	#FFFFFF	#000000	##FFFFFF
##C42E1F	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D531B

Deuteranopia (green-blind)

#827416

Tritanopia (blue-blind)

#D8002C

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #c42e1f;
/* rgb */ color: rgb(196, 46, 31);
/* oklch */ color: oklch(53.9% 0.189 30.0);

Tailwind

colors: {
  custom: {
    50: '#e0735d',
    500: '#c42e1f',
    950: '#000000',
  },
}

SCSS

$custom: #c42e1f;
$custom-light: #e0735d;
$custom-dark: #000000;

JSON

{
  "hex": "#c42e1f",
  "rgb": {
    "r": 196,
    "g": 46,
    "b": 31
  },
  "hsl": {
    "h": 5.455,
    "s": 72.687,
    "l": 44.51
  },
  "oklch": {
    "l": 0.53884,
    "c": 0.18867,
    "h": 30
  },
  "luminance": 0.13789
}

Semantic roles & 50–950 ramp

primary

#C42E1F

secondary

#6FC7D0

accent

#DFEF38

background

#FFF7F5

surface

#FEEDE9

border

#D6C8C5

text

#170904

muted

#857B79

Preview Lab

Preview with #C42E1F

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

Preview Lab → · Contrast checker → · Palette generator →