#C03743#C03743

#C03743 is a mid, vivid red. Relative luminance 0.143; OKLCH L 54.5% C 0.173 H 20.4°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#C03743
RGB	rgb(192, 55, 67)
HSL	hsl(355, 55%, 48%)
HSV	hsv(355, 71%, 75%)
CMYK	cmyk(0%, 71.4%, 65.1%, 24.7%)
CIE-LAB	lab(44.73, 54.80, 25.32)
CIE-LCH	lch(44.73, 60.37, 24.80°)
OKLab	oklab(54.48% 0.1621 0.0602)
OKLCH	oklch(54.48% 0.173 20.4)
XYZ	xyz(24.1201, 14.3476, 6.8084)
Luminance	0.1434 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C03743 #37C0B4

analogous

#C03787 #C03743 #C07037

triadic

#C03743 #43C037 #3743C0

tetradic

#C03743 #87C037 #37C0B4 #7037C0

square

#C03743 #87C037 #37C0B4 #7037C0

split-complementary

#C03743 #37C070 #3787C0

monochromatic

#611C22 #902932 #C03743 #D2626C #E09299

Accessibility & contrast

On white

5.43

#C03743 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#C03743 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C03743

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C03743	#FFFFFF	#000000	##FFFFFF
##C03743	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5742

Deuteranopia (green-blind)

#7F743F

Tritanopia (blue-blind)

#D3083D

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #c03743;
/* rgb */ color: rgb(192, 55, 67);
/* oklch */ color: oklch(54.5% 0.173 20.4);

Tailwind

colors: {
  custom: {
    50: '#da7777',
    500: '#c03743',
    950: '#000000',
  },
}

SCSS

$custom: #c03743;
$custom-light: #da7777;
$custom-dark: #000000;

JSON

{
  "hex": "#c03743",
  "rgb": {
    "r": 192,
    "g": 55,
    "b": 67
  },
  "hsl": {
    "h": 354.745,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.54478,
    "c": 0.17293,
    "h": 20.4
  },
  "luminance": 0.14344
}

Semantic roles & 50–950 ramp

primary

#C03743

secondary

#88CBC5

accent

#DFD249

background

#FEF7F7

surface

#FDEEED

border

#D5C9C8

text

#160908

muted

#847B7B

Preview Lab

Preview with #C03743

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

Preview Lab → · Contrast checker → · Palette generator →