#B33839#B33839

#B33839 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.2% C 0.159 H 24.1°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#B33839
RGB	rgb(179, 56, 57)
HSL	hsl(360, 52%, 46%)
HSV	hsv(360, 69%, 70%)
CMYK	cmyk(0%, 68.7%, 68.2%, 29.8%)
CIE-LAB	lab(42.32, 49.65, 27.85)
CIE-LCH	lch(42.32, 56.93, 29.29°)
OKLab	oklab(52.19% 0.1454 0.0651)
OKLCH	oklch(52.19% 0.159 24.1)
XYZ	xyz(20.7453, 12.7105, 5.2311)
Luminance	0.1271 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33839 #38B3B2

analogous

#B33876 #B33839 #B37438

triadic

#B33839 #39B338 #3839B3

tetradic

#B33839 #76B338 #38B3B2 #7438B3

square

#B33839 #76B338 #38B3B2 #7438B3

split-complementary

#B33839 #38B374 #3876B3

monochromatic

#561B1B #84292A #B33839 #CC5C5D #DB8B8B

Accessibility & contrast

On white

5.93

#B33839 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B33839 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33839

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33839	#FFFFFF	#000000	##FFFFFF
##B33839	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5338

Deuteranopia (green-blind)

#796E35

Tritanopia (blue-blind)

#C5153A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b33839;
/* rgb */ color: rgb(179, 56, 57);
/* oklch */ color: oklch(52.2% 0.159 24.1);

Tailwind

colors: {
  custom: {
    50: '#d1766f',
    500: '#b33839',
    950: '#000000',
  },
}

SCSS

$custom: #b33839;
$custom-light: #d1766f;
$custom-dark: #000000;

JSON

{
  "hex": "#b33839",
  "rgb": {
    "r": 179,
    "g": 56,
    "b": 57
  },
  "hsl": {
    "h": 359.512,
    "s": 52.34,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52193,
    "c": 0.15924,
    "h": 24.1
  },
  "luminance": 0.12707
}

Semantic roles & 50–950 ramp

primary

#B33839

secondary

#82C5C4

accent

#DCDB4C

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33839

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

Preview Lab → · Contrast checker → · Palette generator →