#CB3A3B#CB3A3B

#CB3A3B is a mid, vivid red. Relative luminance 0.160; OKLCH L 56.5% C 0.182 H 24.8°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#CB3A3B
RGB	rgb(203, 58, 59)
HSL	hsl(360, 58%, 51%)
HSV	hsv(360, 71%, 80%)
CMYK	cmyk(0%, 71.4%, 70.9%, 20.4%)
CIE-LAB	lab(47.03, 56.73, 33.36)
CIE-LCH	lch(47.03, 65.81, 30.45°)
OKLab	oklab(56.53% 0.1652 0.0764)
OKLCH	oklch(56.53% 0.182 24.8)
XYZ	xyz(26.9341, 16.0424, 5.8151)
Luminance	0.1604 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3A3B #3ACBCA

analogous

#CB3A83 #CB3A3B #CB813A

triadic

#CB3A3B #3BCB3A #3A3BCB

tetradic

#CB3A3B #83CB3A #3ACBCA #813ACB

square

#CB3A3B #83CB3A #3ACBCA #813ACB

split-complementary

#CB3A3B #3ACB81 #3A83CB

monochromatic

#6E1D1E #9E2A2B #CB3A3B #D86A6B #E59B9B

Accessibility & contrast

On white

4.99

#CB3A3B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.21

#CB3A3B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3A3B

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3A3B	#FFFFFF	#000000	##FFFFFF
##CB3A3B	1.00	4.99	4.21	4.99
#FFFFFF	4.99	1.00	21.00	1.00
#000000	4.21	21.00	1.00	21.00
##FFFFFF	4.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645C3A

Deuteranopia (green-blind)

#887B36

Tritanopia (blue-blind)

#DF003C

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #cb3a3b;
/* rgb */ color: rgb(203, 58, 59);
/* oklch */ color: oklch(56.5% 0.182 24.8);

Tailwind

colors: {
  custom: {
    50: '#e37a71',
    500: '#cb3a3b',
    950: '#000000',
  },
}

SCSS

$custom: #cb3a3b;
$custom-light: #e37a71;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3a3b",
  "rgb": {
    "r": 203,
    "g": 58,
    "b": 59
  },
  "hsl": {
    "h": 359.586,
    "s": 58.233,
    "l": 51.176
  },
  "oklch": {
    "l": 0.56526,
    "c": 0.18202,
    "h": 24.8
  },
  "luminance": 0.16038
}

Semantic roles & 50–950 ramp

primary

#CB3A3B

secondary

#90D0D0

accent

#E1E046

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3A3B

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

Preview Lab → · Contrast checker → · Palette generator →