#C03739#C03739

#C03739 is a mid, vivid red. Relative luminance 0.142; OKLCH L 54.3% C 0.174 H 24.4°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#C03739
RGB	rgb(192, 55, 57)
HSL	hsl(359, 55%, 48%)
HSV	hsv(359, 71%, 75%)
CMYK	cmyk(0%, 71.4%, 70.3%, 24.7%)
CIE-LAB	lab(44.57, 54.26, 31.12)
CIE-LCH	lch(44.57, 62.56, 29.84°)
OKLab	oklab(54.31% 0.1583 0.0717)
OKLCH	oklch(54.31% 0.174 24.4)
XYZ	xyz(23.8456, 14.2378, 5.3627)
Luminance	0.1423 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C03739 #37C0BE

analogous

#C0377D #C03739 #C07937

triadic

#C03739 #39C037 #3739C0

tetradic

#C03739 #7DC037 #37C0BE #7937C0

square

#C03739 #7DC037 #37C0BE #7937C0

split-complementary

#C03739 #37C079 #377DC0

monochromatic

#611C1D #90292B #C03739 #D26264 #E09293

Accessibility & contrast

On white

5.46

#C03739 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#C03739 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C03739

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C03739	#FFFFFF	#000000	##FFFFFF
##C03739	1.00	5.46	3.85	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5738

Deuteranopia (green-blind)

#807435

Tritanopia (blue-blind)

#D30139

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #c03739;
/* rgb */ color: rgb(192, 55, 57);
/* oklch */ color: oklch(54.3% 0.174 24.4);

Tailwind

colors: {
  custom: {
    50: '#db776f',
    500: '#c03739',
    950: '#000000',
  },
}

SCSS

$custom: #c03739;
$custom-light: #db776f;
$custom-dark: #000000;

JSON

{
  "hex": "#c03739",
  "rgb": {
    "r": 192,
    "g": 55,
    "b": 57
  },
  "hsl": {
    "h": 359.124,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.54312,
    "c": 0.17381,
    "h": 24.4
  },
  "luminance": 0.14234
}

Semantic roles & 50–950 ramp

primary

#C03739

secondary

#88CBCA

accent

#DFDD49

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #C03739

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

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