#CB3B3F#CB3B3F

#CB3B3F is a mid, vivid red. Relative luminance 0.162; OKLCH L 56.7% C 0.181 H 23.6°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#CB3B3F
RGB	rgb(203, 59, 63)
HSL	hsl(358, 58%, 51%)
HSV	hsv(358, 71%, 80%)
CMYK	cmyk(0%, 70.9%, 69%, 20.4%)
CIE-LAB	lab(47.22, 56.56, 31.24)
CIE-LCH	lch(47.22, 64.62, 28.91°)
OKLab	oklab(56.68% 0.1655 0.0725)
OKLCH	oklch(56.68% 0.181 23.6)
XYZ	xyz(27.0927, 16.1873, 6.3995)
Luminance	0.1618 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3B3F #3BCBC7

analogous

#CB3B87 #CB3B3F #CB7F3B

triadic

#CB3B3F #3FCB3B #3B3FCB

tetradic

#CB3B3F #87CB3B #3BCBC7 #7F3BCB

square

#CB3B3F #87CB3B #3BCBC7 #7F3BCB

split-complementary

#CB3B3F #3BCB7F #3B87CB

monochromatic

#6E1D20 #9F2A2D #CB3B3F #D86B6E #E59C9E

Accessibility & contrast

On white

4.96

#CB3B3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#CB3B3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3B3F

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3B3F	#FFFFFF	#000000	##FFFFFF
##CB3B3F	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645C3E

Deuteranopia (green-blind)

#887B3A

Tritanopia (blue-blind)

#DF043E

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #cb3b3f;
/* rgb */ color: rgb(203, 59, 63);
/* oklch */ color: oklch(56.7% 0.181 23.6);

Tailwind

colors: {
  custom: {
    50: '#e37b74',
    500: '#cb3b3f',
    950: '#000000',
  },
}

SCSS

$custom: #cb3b3f;
$custom-light: #e37b74;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3b3f",
  "rgb": {
    "r": 203,
    "g": 59,
    "b": 63
  },
  "hsl": {
    "h": 358.333,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56685,
    "c": 0.18066,
    "h": 23.6
  },
  "luminance": 0.16183
}

Semantic roles & 50–950 ramp

primary

#CB3B3F

secondary

#91D1CF

accent

#E1DD47

background

#FFF7F7

surface

#FEEEED

border

#D6C9C8

text

#170A08

muted

#857C7B

Preview Lab

Preview with #CB3B3F

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

Preview Lab → · Contrast checker → · Palette generator →