#C03437#C03437

#C03437 is a mid, vivid red. Relative luminance 0.139; OKLCH L 54.0% C 0.177 H 24.3°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#C03437
RGB	rgb(192, 52, 55)
HSL	hsl(359, 57%, 48%)
HSV	hsv(359, 73%, 75%)
CMYK	cmyk(0%, 72.9%, 71.4%, 24.7%)
CIE-LAB	lab(44.15, 55.26, 31.81)
CIE-LCH	lch(44.15, 63.76, 29.92°)
OKLab	oklab(53.99% 0.1611 0.0728)
OKLCH	oklch(53.99% 0.177 24.3)
XYZ	xyz(23.6585, 13.9419, 5.0590)
Luminance	0.1394 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C03437 #34C0BD

analogous

#C0347D #C03437 #C07734

triadic

#C03437 #37C034 #3437C0

tetradic

#C03437 #7DC034 #34C0BD #7734C0

square

#C03437 #7DC034 #34C0BD #7734C0

split-complementary

#C03437 #34C077 #347DC0

monochromatic

#601A1B #902729 #C03437 #D35E60 #E08E90

Accessibility & contrast

On white

5.54

#C03437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#C03437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C03437

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C03437	#FFFFFF	#000000	##FFFFFF
##C03437	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5536

Deuteranopia (green-blind)

#807332

Tritanopia (blue-blind)

#D30037

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #c03437;
/* rgb */ color: rgb(192, 52, 55);
/* oklch */ color: oklch(54.0% 0.177 24.3);

Tailwind

colors: {
  custom: {
    50: '#db766e',
    500: '#c03437',
    950: '#000000',
  },
}

SCSS

$custom: #c03437;
$custom-light: #db766e;
$custom-dark: #000000;

JSON

{
  "hex": "#c03437",
  "rgb": {
    "r": 192,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.714,
    "s": 57.377,
    "l": 47.843
  },
  "oklch": {
    "l": 0.53988,
    "c": 0.17676,
    "h": 24.3
  },
  "luminance": 0.13938
}

Semantic roles & 50–950 ramp

primary

#C03437

secondary

#85CBC9

accent

#E1DD47

background

#FEF7F6

surface

#FDEEEB

border

#D5C9C6

text

#170907

muted

#857B7A

Preview Lab

Preview with #C03437

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

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