#C03737#C03737

#C03737 is a mid, vivid red. Relative luminance 0.142; OKLCH L 54.3% C 0.174 H 25.1°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#C03737
RGB	rgb(192, 55, 55)
HSL	hsl(0, 55%, 48%)
HSV	hsv(0, 71%, 75%)
CMYK	cmyk(0%, 71.4%, 71.4%, 24.7%)
CIE-LAB	lab(44.54, 54.17, 32.27)
CIE-LCH	lch(44.54, 63.05, 30.78°)
OKLab	oklab(54.28% 0.1576 0.0739)
OKLCH	oklch(54.28% 0.174 25.1)
XYZ	xyz(23.7966, 14.2182, 5.1051)
Luminance	0.1421 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C03737 #37C0C0

analogous

#C0377B #C03737 #C07B37

triadic

#C03737 #37C037 #3737C0

tetradic

#C03737 #7BC037 #37C0C0 #7B37C0

square

#C03737 #7BC037 #37C0C0 #7B37C0

split-complementary

#C03737 #37C07B #377BC0

monochromatic

#611C1C #902929 #C03737 #D26262 #E09292

Accessibility & contrast

On white

5.46

#C03737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#C03737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C03737

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C03737	#FFFFFF	#000000	##FFFFFF
##C03737	1.00	5.46	3.84	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5736

Deuteranopia (green-blind)

#817432

Tritanopia (blue-blind)

#D30039

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #c03737;
/* rgb */ color: rgb(192, 55, 55);
/* oklch */ color: oklch(54.3% 0.174 25.1);

Tailwind

colors: {
  custom: {
    50: '#db776e',
    500: '#c03737',
    950: '#000000',
  },
}

SCSS

$custom: #c03737;
$custom-light: #db776e;
$custom-dark: #000000;

JSON

{
  "hex": "#c03737",
  "rgb": {
    "r": 192,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.54283,
    "c": 0.17404,
    "h": 25.1
  },
  "luminance": 0.14215
}

Semantic roles & 50–950 ramp

primary

#C03737

secondary

#88CBCB

accent

#DFDF49

background

#FEF7F6

surface

#FDEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #C03737

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

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