#B33B39#B33B39

#B33B39 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.5% C 0.156 H 25.1°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#B33B39
RGB	rgb(179, 59, 57)
HSL	hsl(1, 52%, 46%)
HSV	hsv(1, 68%, 70%)
CMYK	cmyk(0%, 67%, 68.2%, 29.8%)
CIE-LAB	lab(42.78, 48.41, 28.40)
CIE-LCH	lch(42.78, 56.13, 30.40°)
OKLab	oklab(52.53% 0.1414 0.0663)
OKLCH	oklch(52.53% 0.156 25.1)
XYZ	xyz(20.8951, 13.0100, 5.2810)
Luminance	0.1301 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33B39 #39B1B3

analogous

#B33974 #B33B39 #B37839

triadic

#B33B39 #39B33B #3B39B3

tetradic

#B33B39 #74B339 #39B1B3 #7839B3

square

#B33B39 #74B339 #39B1B3 #7839B3

split-complementary

#B33B39 #39B378 #3974B3

monochromatic

#561C1B #852C2A #B33B39 #CC5F5E #DA8D8C

Accessibility & contrast

On white

5.83

#B33B39 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B33B39 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33B39

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33B39	#FFFFFF	#000000	##FFFFFF
##B33B39	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5538

Deuteranopia (green-blind)

#7A6F35

Tritanopia (blue-blind)

#C51C3C

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33b39;
/* rgb */ color: rgb(179, 59, 57);
/* oklch */ color: oklch(52.5% 0.156 25.1);

Tailwind

colors: {
  custom: {
    50: '#d1786f',
    500: '#b33b39',
    950: '#000000',
  },
}

SCSS

$custom: #b33b39;
$custom-light: #d1786f;
$custom-dark: #000000;

JSON

{
  "hex": "#b33b39",
  "rgb": {
    "r": 179,
    "g": 59,
    "b": 57
  },
  "hsl": {
    "h": 0.984,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52534,
    "c": 0.1562,
    "h": 25.1
  },
  "luminance": 0.13007
}

Semantic roles & 50–950 ramp

primary

#B33B39

secondary

#83C4C5

accent

#D9DB4D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33B39

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

Preview Lab → · Contrast checker → · Palette generator →