#CB3839#CB3839

#CB3839 is a mid, vivid red. Relative luminance 0.158; OKLCH L 56.3% C 0.184 H 25.0°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#CB3839
RGB	rgb(203, 56, 57)
HSL	hsl(360, 59%, 51%)
HSV	hsv(360, 72%, 80%)
CMYK	cmyk(0%, 72.4%, 71.9%, 20.4%)
CIE-LAB	lab(46.74, 57.36, 34.18)
CIE-LCH	lch(46.74, 66.77, 30.79°)
OKLab	oklab(56.3% 0.1668 0.0779)
OKLCH	oklch(56.3% 0.184 25)
XYZ	xyz(26.7843, 15.8243, 5.5142)
Luminance	0.1582 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3839 #38CBCA

analogous

#CB3882 #CB3839 #CB8038

triadic

#CB3839 #39CB38 #3839CB

tetradic

#CB3839 #82CB38 #38CBCA #8038CB

square

#CB3839 #82CB38 #38CBCA #8038CB

split-complementary

#CB3839 #38CB80 #3882CB

monochromatic

#6C1C1D #9D292A #CB3839 #D86969 #E4999A

Accessibility & contrast

On white

5.04

#CB3839 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#CB3839 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3839

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3839	#FFFFFF	#000000	##FFFFFF
##CB3839	1.00	5.04	4.16	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635B37

Deuteranopia (green-blind)

#877A34

Tritanopia (blue-blind)

#DF003A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #cb3839;
/* rgb */ color: rgb(203, 56, 57);
/* oklch */ color: oklch(56.3% 0.184 25.0);

Tailwind

colors: {
  custom: {
    50: '#e3796f',
    500: '#cb3839',
    950: '#000000',
  },
}

SCSS

$custom: #cb3839;
$custom-light: #e3796f;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3839",
  "rgb": {
    "r": 203,
    "g": 56,
    "b": 57
  },
  "hsl": {
    "h": 359.592,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56303,
    "c": 0.18404,
    "h": 25
  },
  "luminance": 0.1582
}

Semantic roles & 50–950 ramp

primary

#CB3839

secondary

#8FD0D0

accent

#E2E146

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3839

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

Preview Lab → · Contrast checker → · Palette generator →