#C42728#C42728

#C42728 is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.4% C 0.193 H 26.5°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#C42728
RGB	rgb(196, 39, 40)
HSL	hsl(360, 67%, 46%)
HSV	hsv(360, 80%, 77%)
CMYK	cmyk(0%, 80.1%, 79.6%, 23.1%)
CIE-LAB	lab(43.28, 59.98, 39.68)
CIE-LCH	lch(43.28, 71.92, 33.49°)
OKLab	oklab(53.42% 0.1723 0.0859)
OKLCH	oklch(53.42% 0.193 26.5)
XYZ	xyz(23.8764, 13.3439, 3.3255)
Luminance	0.1334 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C42728 #27C4C3

analogous

#C42776 #C42728 #C47427

triadic

#C42728 #28C427 #2728C4

tetradic

#C42728 #76C427 #27C4C3 #7427C4

square

#C42728 #76C427 #27C4C3 #7427C4

split-complementary

#C42728 #27C474 #2776C4

monochromatic

#5E1313 #911D1E #C42728 #DC4D4E #E68080

Accessibility & contrast

On white

5.73

#C42728 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#C42728 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C42728

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C42728	#FFFFFF	#000000	##FFFFFF
##C42728	1.00	5.73	3.67	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5126

Deuteranopia (green-blind)

#807221

Tritanopia (blue-blind)

#D8002A

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #c42728;
/* rgb */ color: rgb(196, 39, 40);
/* oklch */ color: oklch(53.4% 0.193 26.5);

Tailwind

colors: {
  custom: {
    50: '#e07163',
    500: '#c42728',
    950: '#000000',
  },
}

SCSS

$custom: #c42728;
$custom-light: #e07163;
$custom-dark: #000000;

JSON

{
  "hex": "#c42728",
  "rgb": {
    "r": 196,
    "g": 39,
    "b": 40
  },
  "hsl": {
    "h": 359.618,
    "s": 66.809,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5342,
    "c": 0.19254,
    "h": 26.5
  },
  "luminance": 0.1334
}

Semantic roles & 50–950 ramp

primary

#C42728

secondary

#79CECE

accent

#EAE93E

background

#FFF7F5

surface

#FEEDEA

border

#D6C8C6

text

#170905

muted

#857B79

Preview Lab

Preview with #C42728

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

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