#CB3940#CB3940

#CB3940 is a mid, vivid red. Relative luminance 0.160; OKLCH L 56.5% C 0.182 H 22.8°. Best body text is #FFFFFF at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#CB3940
RGB	rgb(203, 57, 64)
HSL	hsl(357, 58%, 51%)
HSV	hsv(357, 72%, 80%)
CMYK	cmyk(0%, 71.9%, 68.5%, 20.4%)
CIE-LAB	lab(46.97, 57.34, 30.35)
CIE-LCH	lch(46.97, 64.88, 27.89°)
OKLab	oklab(56.5% 0.1682 0.0706)
OKLCH	oklch(56.5% 0.182 22.8)
XYZ	xyz(27.0201, 15.9970, 6.5145)
Luminance	0.1599 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3940 #39CBC4

analogous

#CB3989 #CB3940 #CB7B39

triadic

#CB3940 #40CB39 #3940CB

tetradic

#CB3940 #89CB39 #39CBC4 #7B39CB

square

#CB3940 #89CB39 #39CBC4 #7B39CB

split-complementary

#CB3940 #39CB7B #3989CB

monochromatic

#6D1D20 #9D292F #CB3940 #D8696F #E49A9E

Accessibility & contrast

On white

5.00

#CB3940 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.20

#CB3940 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3940

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3940	#FFFFFF	#000000	##FFFFFF
##CB3940	1.00	5.00	4.20	5.00
#FFFFFF	5.00	1.00	21.00	1.00
#000000	4.20	21.00	1.00	21.00
##FFFFFF	5.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635B3F

Deuteranopia (green-blind)

#877B3B

Tritanopia (blue-blind)

#DF003D

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #cb3940;
/* rgb */ color: rgb(203, 57, 64);
/* oklch */ color: oklch(56.5% 0.182 22.8);

Tailwind

colors: {
  custom: {
    50: '#e37a75',
    500: '#cb3940',
    950: '#000000',
  },
}

SCSS

$custom: #cb3940;
$custom-light: #e37a75;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3940",
  "rgb": {
    "r": 203,
    "g": 57,
    "b": 64
  },
  "hsl": {
    "h": 357.123,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.56504,
    "c": 0.18241,
    "h": 22.8
  },
  "luminance": 0.15993
}

Semantic roles & 50–950 ramp

primary

#CB3940

secondary

#90D0CD

accent

#E2DA46

background

#FFF7F7

surface

#FEEEED

border

#D6C9C8

text

#170A08

muted

#857C7B

Preview Lab

Preview with #CB3940

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

Preview Lab → · Contrast checker → · Palette generator →