#B33A3F#B33A3F

#B33A3F is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.5% C 0.157 H 22.1°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#B33A3F
RGB	rgb(179, 58, 63)
HSL	hsl(358, 51%, 46%)
HSV	hsv(358, 68%, 70%)
CMYK	cmyk(0%, 67.6%, 64.8%, 29.8%)
CIE-LAB	lab(42.72, 49.18, 24.72)
CIE-LCH	lch(42.72, 55.04, 26.68°)
OKLab	oklab(52.52% 0.1451 0.0588)
OKLCH	oklch(52.52% 0.157 22.1)
XYZ	xyz(21.0028, 12.9717, 6.0995)
Luminance	0.1297 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33A3F #3AB3AE

analogous

#B33A7C #B33A3F #B3723A

triadic

#B33A3F #3FB33A #3A3FB3

tetradic

#B33A3F #7CB33A #3AB3AE #723AB3

square

#B33A3F #7CB33A #3AB3AE #723AB3

split-complementary

#B33A3F #3AB372 #3A7CB3

monochromatic

#571C1E #852B2F #B33A3F #CB5F64 #DA8D90

Accessibility & contrast

On white

5.84

#B33A3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B33A3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33A3F

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33A3F	#FFFFFF	#000000	##FFFFFF
##B33A3F	1.00	5.84	3.59	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A553E

Deuteranopia (green-blind)

#796E3C

Tritanopia (blue-blind)

#C41C3D

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33a3f;
/* rgb */ color: rgb(179, 58, 63);
/* oklch */ color: oklch(52.5% 0.157 22.1);

Tailwind

colors: {
  custom: {
    50: '#d17774',
    500: '#b33a3f',
    950: '#000000',
  },
}

SCSS

$custom: #b33a3f;
$custom-light: #d17774;
$custom-dark: #000000;

JSON

{
  "hex": "#b33a3f",
  "rgb": {
    "r": 179,
    "g": 58,
    "b": 63
  },
  "hsl": {
    "h": 357.521,
    "s": 51.055,
    "l": 46.471
  },
  "oklch": {
    "l": 0.52521,
    "c": 0.15655,
    "h": 22.1
  },
  "luminance": 0.12969
}

Semantic roles & 50–950 ramp

primary

#B33A3F

secondary

#84C5C2

accent

#DBD54D

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B33A3F

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

Preview Lab → · Contrast checker → · Palette generator →