#C43639#C43639

#C43639 is a mid, vivid red. Relative luminance 0.147; OKLCH L 54.9% C 0.179 H 24.3°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#C43639
RGB	rgb(196, 54, 57)
HSL	hsl(359, 57%, 49%)
HSV	hsv(359, 72%, 77%)
CMYK	cmyk(0%, 72.4%, 70.9%, 23.1%)
CIE-LAB	lab(45.18, 55.89, 32.03)
CIE-LCH	lch(45.18, 64.42, 29.82°)
OKLab	oklab(54.9% 0.163 0.0735)
OKLCH	oklch(54.9% 0.179 24.3)
XYZ	xyz(24.8254, 14.6732, 5.3951)
Luminance	0.1467 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C43639 #36C4C1

analogous

#C43680 #C43639 #C47A36

triadic

#C43639 #39C436 #3639C4

tetradic

#C43639 #80C436 #36C4C1 #7A36C4

square

#C43639 #80C436 #36C4C1 #7A36C4

split-complementary

#C43639 #36C47A #3680C4

monochromatic

#641C1D #94292B #C43639 #D46366 #E19395

Accessibility & contrast

On white

5.34

#C43639 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#C43639 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C43639

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C43639	#FFFFFF	#000000	##FFFFFF
##C43639	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5738

Deuteranopia (green-blind)

#837634

Tritanopia (blue-blind)

#D70039

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #c43639;
/* rgb */ color: rgb(196, 54, 57);
/* oklch */ color: oklch(54.9% 0.179 24.3);

Tailwind

colors: {
  custom: {
    50: '#de776f',
    500: '#c43639',
    950: '#000000',
  },
}

SCSS

$custom: #c43639;
$custom-light: #de776f;
$custom-dark: #000000;

JSON

{
  "hex": "#c43639",
  "rgb": {
    "r": 196,
    "g": 54,
    "b": 57
  },
  "hsl": {
    "h": 358.732,
    "s": 56.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.54904,
    "c": 0.17879,
    "h": 24.3
  },
  "luminance": 0.1467
}

Semantic roles & 50–950 ramp

primary

#C43639

secondary

#89CCCB

accent

#E0DD48

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170907

muted

#857B7A

Preview Lab

Preview with #C43639

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

Preview Lab → · Contrast checker → · Palette generator →