#B33333#B33333

#B33333 is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.6% C 0.165 H 25.1°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#B33333
RGB	rgb(179, 51, 51)
HSL	hsl(0, 56%, 45%)
HSV	hsv(0, 72%, 70%)
CMYK	cmyk(0%, 71.5%, 71.5%, 29.8%)
CIE-LAB	lab(41.52, 51.30, 30.48)
CIE-LCH	lch(41.52, 59.67, 30.72°)
OKLab	oklab(51.57% 0.1493 0.0698)
OKLCH	oklch(51.57% 0.165 25.1)
XYZ	xyz(20.3740, 12.1934, 4.4121)
Luminance	0.1219 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33333 #33B3B3

analogous

#B33373 #B33333 #B37333

triadic

#B33333 #33B333 #3333B3

tetradic

#B33333 #73B333 #33B3B3 #7333B3

square

#B33333 #73B333 #33B3B3 #7333B3

split-complementary

#B33333 #33B373 #3373B3

monochromatic

#541818 #832525 #B33333 #CE5555 #DC8484

Accessibility & contrast

On white

6.11

#B33333 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#B33333 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33333

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33333	#FFFFFF	#000000	##FFFFFF
##B33333	1.00	6.11	3.44	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585032

Deuteranopia (green-blind)

#786C2F

Tritanopia (blue-blind)

#C50135

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b33333;
/* rgb */ color: rgb(179, 51, 51);
/* oklch */ color: oklch(51.6% 0.165 25.1);

Tailwind

colors: {
  custom: {
    50: '#d2746b',
    500: '#b33333',
    950: '#000000',
  },
}

SCSS

$custom: #b33333;
$custom-light: #d2746b;
$custom-dark: #000000;

JSON

{
  "hex": "#b33333",
  "rgb": {
    "r": 179,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51566,
    "c": 0.16483,
    "h": 25.1
  },
  "luminance": 0.1219
}

Semantic roles & 50–950 ramp

primary

#B33333

secondary

#7CC6C6

accent

#DFDF49

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33333

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

Preview Lab → · Contrast checker → · Palette generator →