#CB3F40#CB3F40

#CB3F40 is a mid, vivid red. Relative luminance 0.166; OKLCH L 57.1% C 0.177 H 24.3°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#CB3F40
RGB	rgb(203, 63, 64)
HSL	hsl(360, 57%, 52%)
HSV	hsv(360, 69%, 80%)
CMYK	cmyk(0%, 69%, 68.5%, 20.4%)
CIE-LAB	lab(47.78, 55.10, 31.33)
CIE-LCH	lch(47.78, 63.39, 29.63°)
OKLab	oklab(57.11% 0.1611 0.0728)
OKLCH	oklch(57.11% 0.177 24.3)
XYZ	xyz(27.3345, 16.6257, 6.6192)
Luminance	0.1662 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3F40 #3FCBCA

analogous

#CB3F86 #CB3F40 #CB843F

triadic

#CB3F40 #40CB3F #3F40CB

tetradic

#CB3F40 #86CB3F #3FCBCA #843FCB

square

#CB3F40 #86CB3F #3FCBCA #843FCB

split-complementary

#CB3F40 #3FCB84 #3F86CB

monochromatic

#711F1F #A12C2C #CB3F40 #D86F70 #E59FA0

Accessibility & contrast

On white

4.86

#CB3F40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#CB3F40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3F40

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3F40	#FFFFFF	#000000	##FFFFFF
##CB3F40	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665E3F

Deuteranopia (green-blind)

#897C3C

Tritanopia (blue-blind)

#DF1441

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #cb3f40;
/* rgb */ color: rgb(203, 63, 64);
/* oklch */ color: oklch(57.1% 0.177 24.3);

Tailwind

colors: {
  custom: {
    50: '#e37d75',
    500: '#cb3f40',
    950: '#000000',
  },
}

SCSS

$custom: #cb3f40;
$custom-light: #e37d75;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3f40",
  "rgb": {
    "r": 203,
    "g": 63,
    "b": 64
  },
  "hsl": {
    "h": 359.571,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57112,
    "c": 0.17677,
    "h": 24.3
  },
  "luminance": 0.16622
}

Semantic roles & 50–950 ramp

primary

#CB3F40

secondary

#94D1D1

accent

#E1E047

background

#FFF7F7

surface

#FEEEED

border

#D6C9C8

text

#170A08

muted

#857C7B

Preview Lab

Preview with #CB3F40

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

Preview Lab → · Contrast checker → · Palette generator →