#B33A3B#B33A3B

#B33A3B is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.5% C 0.157 H 23.9°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B33A3B
RGB	rgb(179, 58, 59)
HSL	hsl(360, 51%, 46%)
HSV	hsv(360, 68%, 70%)
CMYK	cmyk(0%, 67.6%, 67%, 29.8%)
CIE-LAB	lab(42.66, 48.94, 27.06)
CIE-LCH	lch(42.66, 55.92, 28.93°)
OKLab	oklab(52.45% 0.1435 0.0636)
OKLCH	oklch(52.45% 0.157 23.9)
XYZ	xyz(20.8950, 12.9286, 5.5320)
Luminance	0.1293 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33A3B #3AB3B2

analogous

#B33A78 #B33A3B #B3763A

triadic

#B33A3B #3BB33A #3A3BB3

tetradic

#B33A3B #78B33A #3AB3B2 #763AB3

square

#B33A3B #78B33A #3AB3B2 #763AB3

split-complementary

#B33A3B #3AB376 #3A78B3

monochromatic

#571C1D #852B2C #B33A3B #CB5F60 #DA8D8E

Accessibility & contrast

On white

5.86

#B33A3B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B33A3B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33A3B

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33A3B	#FFFFFF	#000000	##FFFFFF
##B33A3B	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B543A

Deuteranopia (green-blind)

#796E37

Tritanopia (blue-blind)

#C41A3C

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33a3b;
/* rgb */ color: rgb(179, 58, 59);
/* oklch */ color: oklch(52.5% 0.157 23.9);

Tailwind

colors: {
  custom: {
    50: '#d17771',
    500: '#b33a3b',
    950: '#000000',
  },
}

SCSS

$custom: #b33a3b;
$custom-light: #d17771;
$custom-dark: #000000;

JSON

{
  "hex": "#b33a3b",
  "rgb": {
    "r": 179,
    "g": 58,
    "b": 59
  },
  "hsl": {
    "h": 359.504,
    "s": 51.055,
    "l": 46.471
  },
  "oklch": {
    "l": 0.52451,
    "c": 0.15696,
    "h": 23.9
  },
  "luminance": 0.12926
}

Semantic roles & 50–950 ramp

primary

#B33A3B

secondary

#84C5C4

accent

#DBD94D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33A3B

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

Preview Lab → · Contrast checker → · Palette generator →