#C03A31#C03A31

#C03A31 is a mid, vivid red. Relative luminance 0.145; OKLCH L 54.5% C 0.172 H 28.1°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#C03A31
RGB	rgb(192, 58, 49)
HSL	hsl(4, 59%, 47%)
HSV	hsv(4, 74%, 75%)
CMYK	cmyk(0%, 69.8%, 74.5%, 24.7%)
CIE-LAB	lab(44.88, 52.76, 36.12)
CIE-LCH	lch(44.88, 63.94, 34.40°)
OKLab	oklab(54.51% 0.1519 0.081)
OKLCH	oklch(54.51% 0.172 28.1)
XYZ	xyz(23.8083, 14.4579, 4.4421)
Luminance	0.1445 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C03A31 #31B7C0

analogous

#C03170 #C03A31 #C08131

triadic

#C03A31 #31C03A #3A31C0

tetradic

#C03A31 #70C031 #31B7C0 #8131C0

square

#C03A31 #70C031 #31B7C0 #8131C0

split-complementary

#C03A31 #31C081 #3170C0

monochromatic

#5E1D18 #8F2B25 #C03A31 #D56159 #E1908A

Accessibility & contrast

On white

5.40

#C03A31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#C03A31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C03A31

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C03A31	#FFFFFF	#000000	##FFFFFF
##C03A31	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#61582F

Deuteranopia (green-blind)

#82752C

Tritanopia (blue-blind)

#D30939

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #c03a31;
/* rgb */ color: rgb(192, 58, 49);
/* oklch */ color: oklch(54.5% 0.172 28.1);

Tailwind

colors: {
  custom: {
    50: '#db796a',
    500: '#c03a31',
    950: '#000000',
  },
}

SCSS

$custom: #c03a31;
$custom-light: #db796a;
$custom-dark: #000000;

JSON

{
  "hex": "#c03a31",
  "rgb": {
    "r": 192,
    "g": 58,
    "b": 49
  },
  "hsl": {
    "h": 3.776,
    "s": 59.336,
    "l": 47.255
  },
  "oklch": {
    "l": 0.54511,
    "c": 0.17215,
    "h": 28.1
  },
  "luminance": 0.14454
}

Semantic roles & 50–950 ramp

primary

#C03A31

secondary

#82C7CB

accent

#D9E345

background

#FEF7F6

surface

#FDEEEB

border

#D5C9C6

text

#170A06

muted

#857C7A

Preview Lab

Preview with #C03A31

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

Preview Lab → · Contrast checker → · Palette generator →