#B33138#B33138

#B33138 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.166 H 22.5°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#B33138
RGB	rgb(179, 49, 56)
HSL	hsl(357, 57%, 45%)
HSV	hsv(357, 73%, 70%)
CMYK	cmyk(0%, 72.6%, 68.7%, 29.8%)
CIE-LAB	lab(41.33, 52.30, 27.24)
CIE-LCH	lch(41.33, 58.96, 27.51°)
OKLab	oklab(51.44% 0.1535 0.0635)
OKLCH	oklch(51.44% 0.166 22.5)
XYZ	xyz(20.4047, 12.0689, 4.9957)
Luminance	0.1207 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33138 #31B3AC

analogous

#B33179 #B33138 #B36B31

triadic

#B33138 #38B331 #3138B3

tetradic

#B33138 #79B331 #31B3AC #6B31B3

square

#B33138 #79B331 #31B3AC #6B31B3

split-complementary

#B33138 #31B36B #3179B3

monochromatic

#53171A #832429 #B33138 #D05258 #DD8287

Accessibility & contrast

On white

6.15

#B33138 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B33138 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33138

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33138	#FFFFFF	#000000	##FFFFFF
##B33138	1.00	6.15	3.41	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#565037

Deuteranopia (green-blind)

#776C34

Tritanopia (blue-blind)

#C50035

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b33138;
/* rgb */ color: rgb(179, 49, 56);
/* oklch */ color: oklch(51.4% 0.166 22.5);

Tailwind

colors: {
  custom: {
    50: '#d1736e',
    500: '#b33138',
    950: '#000000',
  },
}

SCSS

$custom: #b33138;
$custom-light: #d1736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b33138",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 56
  },
  "hsl": {
    "h": 356.769,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51443,
    "c": 0.16616,
    "h": 22.5
  },
  "luminance": 0.12066
}

Semantic roles & 50–950 ramp

primary

#B33138

secondary

#7AC6C2

accent

#E0D848

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33138

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

Preview Lab → · Contrast checker → · Palette generator →