#B33133#B33133

#B33133 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.4% C 0.167 H 24.5°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#B33133
RGB	rgb(179, 49, 51)
HSL	hsl(359, 57%, 45%)
HSV	hsv(359, 73%, 70%)
CMYK	cmyk(0%, 72.6%, 71.5%, 29.8%)
CIE-LAB	lab(41.25, 52.04, 30.16)
CIE-LCH	lch(41.25, 60.15, 30.10°)
OKLab	oklab(51.37% 0.1517 0.0691)
OKLCH	oklch(51.37% 0.167 24.5)
XYZ	xyz(20.2885, 12.0224, 4.3836)
Luminance	0.1202 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33133 #31B3B1

analogous

#B33174 #B33133 #B37031

triadic

#B33133 #33B331 #3133B3

tetradic

#B33133 #74B331 #31B3B1 #7031B3

square

#B33133 #74B331 #31B3B1 #7031B3

split-complementary

#B33133 #31B370 #3174B3

monochromatic

#531718 #832425 #B33133 #D05254 #DD8283

Accessibility & contrast

On white

6.17

#B33133 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#B33133 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33133

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33133	#FFFFFF	#000000	##FFFFFF
##B33133	1.00	6.17	3.40	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574F32

Deuteranopia (green-blind)

#776B2F

Tritanopia (blue-blind)

#C50033

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b33133;
/* rgb */ color: rgb(179, 49, 51);
/* oklch */ color: oklch(51.4% 0.167 24.5);

Tailwind

colors: {
  custom: {
    50: '#d2736b',
    500: '#b33133',
    950: '#000000',
  },
}

SCSS

$custom: #b33133;
$custom-light: #d2736b;
$custom-dark: #000000;

JSON

{
  "hex": "#b33133",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 51
  },
  "hsl": {
    "h": 359.077,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51365,
    "c": 0.16668,
    "h": 24.5
  },
  "luminance": 0.12019
}

Semantic roles & 50–950 ramp

primary

#B33133

secondary

#7AC6C5

accent

#E0DE48

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33133

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

Preview Lab → · Contrast checker → · Palette generator →