#C53737#C53737

#C53737 is a mid, vivid red. Relative luminance 0.149; OKLCH L 55.1% C 0.179 H 25.3°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#C53737
RGB	rgb(197, 55, 55)
HSL	hsl(0, 56%, 49%)
HSV	hsv(0, 72%, 77%)
CMYK	cmyk(0%, 72.1%, 72.1%, 22.7%)
CIE-LAB	lab(45.47, 55.75, 33.59)
CIE-LCH	lch(45.47, 65.09, 31.07°)
OKLab	oklab(55.14% 0.162 0.0765)
OKLCH	oklch(55.14% 0.179 25.3)
XYZ	xyz(25.0846, 14.8823, 5.1654)
Luminance	0.1488 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C53737 #37C5C5

analogous

#C5377E #C53737 #C57E37

triadic

#C53737 #37C537 #3737C5

tetradic

#C53737 #7EC537 #37C5C5 #7E37C5

square

#C53737 #7EC537 #37C5C5 #7E37C5

split-complementary

#C53737 #37C57E #377EC5

monochromatic

#651C1C #952A2A #C53737 #D46565 #E19595

Accessibility & contrast

On white

5.28

#C53737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#C53737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C53737

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C53737	#FFFFFF	#000000	##FFFFFF
##C53737	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)

#605835

Deuteranopia (green-blind)

#847732

Tritanopia (blue-blind)

#D90039

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #c53737;
/* rgb */ color: rgb(197, 55, 55);
/* oklch */ color: oklch(55.1% 0.179 25.3);

Tailwind

colors: {
  custom: {
    50: '#df786e',
    500: '#c53737',
    950: '#000000',
  },
}

SCSS

$custom: #c53737;
$custom-light: #df786e;
$custom-dark: #000000;

JSON

{
  "hex": "#c53737",
  "rgb": {
    "r": 197,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.55144,
    "c": 0.17913,
    "h": 25.3
  },
  "luminance": 0.14879
}

Semantic roles & 50–950 ramp

primary

#C53737

secondary

#8BCDCD

accent

#E0E048

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C53737

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

Preview Lab → · Contrast checker → · Palette generator →