#CB3B3A#CB3B3A

#CB3B3A is a mid, vivid red. Relative luminance 0.161; OKLCH L 56.6% C 0.181 H 25.4°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#CB3B3A
RGB	rgb(203, 59, 58)
HSL	hsl(0, 58%, 51%)
HSV	hsv(0, 71%, 80%)
CMYK	cmyk(0%, 70.9%, 71.4%, 20.4%)
CIE-LAB	lab(47.15, 56.32, 34.08)
CIE-LCH	lch(47.15, 65.83, 31.18°)
OKLab	oklab(56.61% 0.1637 0.0778)
OKLCH	oklch(56.61% 0.181 25.4)
XYZ	xyz(26.9593, 16.1340, 5.6968)
Luminance	0.1613 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3B3A #3ACACB

analogous

#CB3A81 #CB3B3A #CB833A

triadic

#CB3B3A #3ACB3B #3B3ACB

tetradic

#CB3B3A #81CB3A #3ACACB #833ACB

square

#CB3B3A #81CB3A #3ACACB #833ACB

split-complementary

#CB3B3A #3ACB83 #3A81CB

monochromatic

#6E1E1D #9E2B2A #CB3B3A #D86B6A #E59B9B

Accessibility & contrast

On white

4.97

#CB3B3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#CB3B3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3B3A

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3B3A	#FFFFFF	#000000	##FFFFFF
##CB3B3A	1.00	4.97	4.23	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645C38

Deuteranopia (green-blind)

#887B35

Tritanopia (blue-blind)

#DF003C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #cb3b3a;
/* rgb */ color: rgb(203, 59, 58);
/* oklch */ color: oklch(56.6% 0.181 25.4);

Tailwind

colors: {
  custom: {
    50: '#e37b70',
    500: '#cb3b3a',
    950: '#000000',
  },
}

SCSS

$custom: #cb3b3a;
$custom-light: #e37b70;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3b3a",
  "rgb": {
    "r": 203,
    "g": 59,
    "b": 58
  },
  "hsl": {
    "h": 0.414,
    "s": 58.233,
    "l": 51.176
  },
  "oklch": {
    "l": 0.56611,
    "c": 0.18125,
    "h": 25.4
  },
  "luminance": 0.1613
}

Semantic roles & 50–950 ramp

primary

#CB3B3A

secondary

#90D0D0

accent

#E0E146

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3B3A

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

Preview Lab → · Contrast checker → · Palette generator →