#C43A3B#C43A3B

#C43A3B is a mid, vivid red. Relative luminance 0.151; OKLCH L 55.3% C 0.175 H 24.6°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#C43A3B
RGB	rgb(196, 58, 59)
HSL	hsl(360, 54%, 50%)
HSV	hsv(360, 70%, 77%)
CMYK	cmyk(0%, 70.4%, 69.9%, 23.1%)
CIE-LAB	lab(45.75, 54.51, 31.52)
CIE-LCH	lch(45.75, 62.97, 30.04°)
OKLab	oklab(55.33% 0.159 0.0727)
OKLCH	oklch(55.33% 0.175 24.6)
XYZ	xyz(25.0702, 15.0814, 5.7277)
Luminance	0.1508 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C43A3B #3AC4C3

analogous

#C43A80 #C43A3B #C47E3A

triadic

#C43A3B #3BC43A #3A3BC4

tetradic

#C43A3B #80C43A #3AC4C3 #7E3AC4

square

#C43A3B #80C43A #3AC4C3 #7E3AC4

split-complementary

#C43A3B #3AC47E #3A80C4

monochromatic

#661E1F #952C2D #C43A3B #D36969 #E09898

Accessibility & contrast

On white

5.23

#C43A3B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#C43A3B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C43A3B

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C43A3B	#FFFFFF	#000000	##FFFFFF
##C43A3B	1.00	5.23	4.02	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#61593A

Deuteranopia (green-blind)

#847737

Tritanopia (blue-blind)

#D7083C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #c43a3b;
/* rgb */ color: rgb(196, 58, 59);
/* oklch */ color: oklch(55.3% 0.175 24.6);

Tailwind

colors: {
  custom: {
    50: '#de7971',
    500: '#c43a3b',
    950: '#000000',
  },
}

SCSS

$custom: #c43a3b;
$custom-light: #de7971;
$custom-dark: #000000;

JSON

{
  "hex": "#c43a3b",
  "rgb": {
    "r": 196,
    "g": 58,
    "b": 59
  },
  "hsl": {
    "h": 359.565,
    "s": 54.331,
    "l": 49.804
  },
  "oklch": {
    "l": 0.55332,
    "c": 0.17488,
    "h": 24.6
  },
  "luminance": 0.15078
}

Semantic roles & 50–950 ramp

primary

#C43A3B

secondary

#8ECCCC

accent

#DEDD4A

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C43A3B

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

Preview Lab → · Contrast checker → · Palette generator →