#C1303B#C1303B

#C1303B is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.9% C 0.181 H 22.0°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#C1303B
RGB	rgb(193, 48, 59)
HSL	hsl(355, 60%, 47%)
HSV	hsv(355, 75%, 76%)
CMYK	cmyk(0%, 75.1%, 69.4%, 24.3%)
CIE-LAB	lab(43.90, 57.13, 29.17)
CIE-LCH	lch(43.90, 64.15, 27.05°)
OKLab	oklab(53.86% 0.1677 0.0677)
OKLCH	oklch(53.86% 0.181 22)
XYZ	xyz(23.8414, 13.7708, 5.5395)
Luminance	0.1377 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C1303B #30C1B6

analogous

#C13084 #C1303B #C16D30

triadic

#C1303B #3BC130 #303BC1

tetradic

#C1303B #84C130 #30C1B6 #6D30C1

square

#C1303B #84C130 #30C1B6 #6D30C1

split-complementary

#C1303B #30C16D #3084C1

monochromatic

#5F181D #90242C #C1303B #D65962 #E28A90

Accessibility & contrast

On white

5.59

#C1303B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#C1303B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C1303B

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C1303B	#FFFFFF	#000000	##FFFFFF
##C1303B	1.00	5.59	3.75	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A543A

Deuteranopia (green-blind)

#7F7336

Tritanopia (blue-blind)

#D40036

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #c1303b;
/* rgb */ color: rgb(193, 48, 59);
/* oklch */ color: oklch(53.9% 0.181 22.0);

Tailwind

colors: {
  custom: {
    50: '#dc7471',
    500: '#c1303b',
    950: '#000000',
  },
}

SCSS

$custom: #c1303b;
$custom-light: #dc7471;
$custom-dark: #000000;

JSON

{
  "hex": "#c1303b",
  "rgb": {
    "r": 193,
    "g": 48,
    "b": 59
  },
  "hsl": {
    "h": 355.448,
    "s": 60.166,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53857,
    "c": 0.18088,
    "h": 22
  },
  "luminance": 0.13767
}

Semantic roles & 50–950 ramp

primary

#C1303B

secondary

#81CCC6

accent

#E3D744

background

#FEF7F6

surface

#FDEDEC

border

#D5C8C7

text

#170907

muted

#857B7A

Preview Lab

Preview with #C1303B

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

Preview Lab → · Contrast checker → · Palette generator →