#C5303B#C5303B

#C5303B is a mid, vivid red. Relative luminance 0.143; OKLCH L 54.6% C 0.185 H 22.2°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#C5303B
RGB	rgb(197, 48, 59)
HSL	hsl(356, 61%, 48%)
HSV	hsv(356, 76%, 77%)
CMYK	cmyk(0%, 75.6%, 70.1%, 22.7%)
CIE-LAB	lab(44.67, 58.34, 30.27)
CIE-LCH	lch(44.67, 65.72, 27.43°)
OKLab	oklab(54.56% 0.1711 0.0699)
OKLCH	oklch(54.56% 0.185 22.2)
XYZ	xyz(24.8751, 14.3038, 5.5879)
Luminance	0.1430 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C5303B #30C5BA

analogous

#C53086 #C5303B #C56F30

triadic

#C5303B #3BC530 #303BC5

tetradic

#C5303B #86C530 #30C5BA #6F30C5

square

#C5303B #86C530 #30C5BA #6F30C5

split-complementary

#C5303B #30C56F #3086C5

monochromatic

#63181E #94242C #C5303B #D75B64 #E38C93

Accessibility & contrast

On white

5.44

#C5303B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#C5303B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C5303B

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C5303B	#FFFFFF	#000000	##FFFFFF
##C5303B	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C553A

Deuteranopia (green-blind)

#817536

Tritanopia (blue-blind)

#D90036

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #c5303b;
/* rgb */ color: rgb(197, 48, 59);
/* oklch */ color: oklch(54.6% 0.185 22.2);

Tailwind

colors: {
  custom: {
    50: '#df7571',
    500: '#c5303b',
    950: '#000000',
  },
}

SCSS

$custom: #c5303b;
$custom-light: #df7571;
$custom-dark: #000000;

JSON

{
  "hex": "#c5303b",
  "rgb": {
    "r": 197,
    "g": 48,
    "b": 59
  },
  "hsl": {
    "h": 355.57,
    "s": 60.816,
    "l": 48.039
  },
  "oklch": {
    "l": 0.54561,
    "c": 0.18479,
    "h": 22.2
  },
  "luminance": 0.143
}

Semantic roles & 50–950 ramp

primary

#C5303B

secondary

#84CDC8

accent

#E4D844

background

#FEF7F6

surface

#FDEDEC

border

#D5C8C7

text

#170907

muted

#857B7A

Preview Lab

Preview with #C5303B

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

Preview Lab → · Contrast checker → · Palette generator →