#B33B2A#B33B2A

#B33B2A is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.3% C 0.159 H 31.0°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#B33B2A
RGB	rgb(179, 59, 42)
HSL	hsl(7, 62%, 43%)
HSV	hsv(7, 77%, 70%)
CMYK	cmyk(0%, 67%, 76.5%, 29.8%)
CIE-LAB	lab(42.58, 47.70, 36.86)
CIE-LCH	lch(42.58, 60.28, 37.70°)
OKLab	oklab(52.33% 0.1361 0.0817)
OKLCH	oklch(52.33% 0.159 31)
XYZ	xyz(20.5746, 12.8818, 3.5931)
Luminance	0.1288 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33B2A #2AA2B3

analogous

#B32A5D #B33B2A #B37F2A

triadic

#B33B2A #2AB33B #3B2AB3

tetradic

#B33B2A #5DB32A #2AA2B3 #7F2AB3

square

#B33B2A #5DB32A #2AA2B3 #7F2AB3

split-complementary

#B33B2A #2AB37F #2A5DB3

monochromatic

#501A13 #812B1E #B33B2A #D45846 #DF8578

Accessibility & contrast

On white

5.87

#B33B2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B33B2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33B2A

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33B2A	#FFFFFF	#000000	##FFFFFF
##B33B2A	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5427

Deuteranopia (green-blind)

#7B6E26

Tritanopia (blue-blind)

#C51738

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33b2a;
/* rgb */ color: rgb(179, 59, 42);
/* oklch */ color: oklch(52.3% 0.159 31.0);

Tailwind

colors: {
  custom: {
    50: '#d27765',
    500: '#b33b2a',
    950: '#000000',
  },
}

SCSS

$custom: #b33b2a;
$custom-light: #d27765;
$custom-dark: #000000;

JSON

{
  "hex": "#b33b2a",
  "rgb": {
    "r": 179,
    "g": 59,
    "b": 42
  },
  "hsl": {
    "h": 7.445,
    "s": 61.991,
    "l": 43.333
  },
  "oklch": {
    "l": 0.52326,
    "c": 0.15874,
    "h": 31
  },
  "luminance": 0.12879
}

Semantic roles & 50–950 ramp

primary

#B33B2A

secondary

#72BDC7

accent

#D1E543

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B33B2A

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

Preview Lab → · Contrast checker → · Palette generator →