#CB3D3B#CB3D3B

#CB3D3B is a mid, vivid red. Relative luminance 0.164; OKLCH L 56.8% C 0.179 H 25.6°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#CB3D3B
RGB	rgb(203, 61, 59)
HSL	hsl(1, 58%, 51%)
HSV	hsv(1, 71%, 80%)
CMYK	cmyk(0%, 70%, 70.9%, 20.4%)
CIE-LAB	lab(47.44, 55.62, 33.83)
CIE-LCH	lch(47.44, 65.10, 31.31°)
OKLab	oklab(56.83% 0.1617 0.0775)
OKLCH	oklch(56.83% 0.179 25.6)
XYZ	xyz(27.0897, 16.3538, 5.8670)
Luminance	0.1635 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3D3B #3BC9CB

analogous

#CB3B81 #CB3D3B #CB853B

triadic

#CB3D3B #3BCB3D #3D3BCB

tetradic

#CB3D3B #81CB3B #3BC9CB #853BCB

square

#CB3D3B #81CB3B #3BC9CB #853BCB

split-complementary

#CB3D3B #3BCB85 #3B81CB

monochromatic

#6E1E1D #9F2C2A #CB3D3B #D86D6B #E59D9C

Accessibility & contrast

On white

4.92

#CB3D3B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#CB3D3B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3D3B

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3D3B	#FFFFFF	#000000	##FFFFFF
##CB3D3B	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#655D39

Deuteranopia (green-blind)

#897C36

Tritanopia (blue-blind)

#DF0A3E

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #cb3d3b;
/* rgb */ color: rgb(203, 61, 59);
/* oklch */ color: oklch(56.8% 0.179 25.6);

Tailwind

colors: {
  custom: {
    50: '#e37c71',
    500: '#cb3d3b',
    950: '#000000',
  },
}

SCSS

$custom: #cb3d3b;
$custom-light: #e37c71;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3d3b",
  "rgb": {
    "r": 203,
    "g": 61,
    "b": 59
  },
  "hsl": {
    "h": 0.833,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56828,
    "c": 0.17928,
    "h": 25.6
  },
  "luminance": 0.1635
}

Semantic roles & 50–950 ramp

primary

#CB3D3B

secondary

#91D0D1

accent

#DFE147

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3D3B

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

Preview Lab → · Contrast checker → · Palette generator →