#B33F3A#B33F3A

#B33F3A is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.0% C 0.152 H 26.1°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#B33F3A
RGB	rgb(179, 63, 58)
HSL	hsl(2, 51%, 46%)
HSV	hsv(2, 68%, 70%)
CMYK	cmyk(0%, 64.8%, 67.6%, 29.8%)
CIE-LAB	lab(43.43, 46.75, 28.60)
CIE-LCH	lch(43.43, 54.81, 31.46°)
OKLab	oklab(53.03% 0.1364 0.0669)
OKLCH	oklch(53.03% 0.152 26.1)
XYZ	xyz(21.1338, 13.4472, 5.4849)
Luminance	0.1344 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F3A #3AAEB3

analogous

#B33A72 #B33F3A #B37C3A

triadic

#B33F3A #3AB33F #3F3AB3

tetradic

#B33F3A #72B33A #3AAEB3 #7C3AB3

square

#B33F3A #72B33A #3AAEB3 #7C3AB3

split-complementary

#B33F3A #3AB37C #3A72B3

monochromatic

#571E1C #852F2B #B33F3A #CB645F #DA908D

Accessibility & contrast

On white

5.69

#B33F3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#B33F3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F3A

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F3A	#FFFFFF	#000000	##FFFFFF
##B33F3A	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5739

Deuteranopia (green-blind)

#7B7037

Tritanopia (blue-blind)

#C4233F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b33f3a;
/* rgb */ color: rgb(179, 63, 58);
/* oklch */ color: oklch(53.0% 0.152 26.1);

Tailwind

colors: {
  custom: {
    50: '#d17a70',
    500: '#b33f3a',
    950: '#000000',
  },
}

SCSS

$custom: #b33f3a;
$custom-light: #d17a70;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f3a",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 58
  },
  "hsl": {
    "h": 2.479,
    "s": 51.055,
    "l": 46.471
  },
  "oklch": {
    "l": 0.53027,
    "c": 0.15191,
    "h": 26.1
  },
  "luminance": 0.13444
}

Semantic roles & 50–950 ramp

primary

#B33F3A

secondary

#84C2C5

accent

#D5DB4D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150A07

muted

#837C7A

Preview Lab

Preview with #B33F3A

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

Preview Lab → · Contrast checker → · Palette generator →