#B33A3A#B33A3A

#B33A3A is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.4% C 0.157 H 24.3°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B33A3A
RGB	rgb(179, 58, 58)
HSL	hsl(0, 51%, 46%)
HSV	hsv(0, 68%, 70%)
CMYK	cmyk(0%, 67.6%, 67.6%, 29.8%)
CIE-LAB	lab(42.64, 48.89, 27.64)
CIE-LCH	lch(42.64, 56.16, 29.48°)
OKLab	oklab(52.43% 0.1431 0.0647)
OKLCH	oklch(52.43% 0.157 24.3)
XYZ	xyz(20.8694, 12.9183, 5.3967)
Luminance	0.1291 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33A3A #3AB3B3

analogous

#B33A77 #B33A3A #B3773A

triadic

#B33A3A #3AB33A #3A3AB3

tetradic

#B33A3A #77B33A #3AB3B3 #773AB3

square

#B33A3A #77B33A #3AB3B3 #773AB3

split-complementary

#B33A3A #3AB377 #3A77B3

monochromatic

#571C1C #852B2B #B33A3A #CB5F5F #DA8D8D

Accessibility & contrast

On white

5.86

#B33A3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B33A3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33A3A

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33A3A	#FFFFFF	#000000	##FFFFFF
##B33A3A	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5439

Deuteranopia (green-blind)

#796E36

Tritanopia (blue-blind)

#C41A3B

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33a3a;
/* rgb */ color: rgb(179, 58, 58);
/* oklch */ color: oklch(52.4% 0.157 24.3);

Tailwind

colors: {
  custom: {
    50: '#d17770',
    500: '#b33a3a',
    950: '#000000',
  },
}

SCSS

$custom: #b33a3a;
$custom-light: #d17770;
$custom-dark: #000000;

JSON

{
  "hex": "#b33a3a",
  "rgb": {
    "r": 179,
    "g": 58,
    "b": 58
  },
  "hsl": {
    "h": 0,
    "s": 51.055,
    "l": 46.471
  },
  "oklch": {
    "l": 0.52435,
    "c": 0.15709,
    "h": 24.3
  },
  "luminance": 0.12915
}

Semantic roles & 50–950 ramp

primary

#B33A3A

secondary

#84C5C5

accent

#DBDB4D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33A3A

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

Preview Lab → · Contrast checker → · Palette generator →