#CB3F39#CB3F39

#CB3F39 is a mid, vivid red. Relative luminance 0.165; OKLCH L 57.0% C 0.178 H 26.8°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#CB3F39
RGB	rgb(203, 63, 57)
HSL	hsl(2, 58%, 51%)
HSV	hsv(2, 72%, 80%)
CMYK	cmyk(0%, 69%, 71.9%, 20.4%)
CIE-LAB	lab(47.69, 54.76, 35.28)
CIE-LCH	lch(47.69, 65.14, 32.79°)
OKLab	oklab(57.01% 0.1586 0.0802)
OKLCH	oklch(57.01% 0.178 26.8)
XYZ	xyz(27.1476, 16.5509, 5.6353)
Luminance	0.1655 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3F39 #39C5CB

analogous

#CB397C #CB3F39 #CB8839

triadic

#CB3F39 #39CB3F #3F39CB

tetradic

#CB3F39 #7CCB39 #39C5CB #8839CB

square

#CB3F39 #7CCB39 #39C5CB #8839CB

split-complementary

#CB3F39 #39CB88 #397CCB

monochromatic

#6D201D #9D2E29 #CB3F39 #D86E69 #E49D9A

Accessibility & contrast

On white

4.87

#CB3F39 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#CB3F39 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3F39

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3F39	#FFFFFF	#000000	##FFFFFF
##CB3F39	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675E37

Deuteranopia (green-blind)

#8A7C34

Tritanopia (blue-blind)

#DF113F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #cb3f39;
/* rgb */ color: rgb(203, 63, 57);
/* oklch */ color: oklch(57.0% 0.178 26.8);

Tailwind

colors: {
  custom: {
    50: '#e37c70',
    500: '#cb3f39',
    950: '#000000',
  },
}

SCSS

$custom: #cb3f39;
$custom-light: #e37c70;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3f39",
  "rgb": {
    "r": 203,
    "g": 63,
    "b": 57
  },
  "hsl": {
    "h": 2.466,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.5701,
    "c": 0.1777,
    "h": 26.8
  },
  "luminance": 0.16547
}

Semantic roles & 50–950 ramp

primary

#CB3F39

secondary

#90CED0

accent

#DBE246

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3F39

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

Preview Lab → · Contrast checker → · Palette generator →