#B33121#B33121

#B33121 is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.1% C 0.169 H 30.6°. Best body text is #FFFFFF at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#B33121
RGB	rgb(179, 49, 33)
HSL	hsl(7, 69%, 42%)
HSV	hsv(7, 82%, 70%)
CMYK	cmyk(0%, 72.6%, 81.6%, 29.8%)
CIE-LAB	lab(41.05, 51.34, 40.16)
CIE-LCH	lch(41.05, 65.18, 38.03°)
OKLab	oklab(51.15% 0.1457 0.0861)
OKLCH	oklch(51.15% 0.169 30.6)
XYZ	xyz(19.9656, 11.8932, 2.6829)
Luminance	0.1189 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33121 #21A3B3

analogous

#B3215A #B33121 #B37A21

triadic

#B33121 #21B331 #3121B3

tetradic

#B33121 #5AB321 #21A3B3 #7A21B3

square

#B33121 #5AB321 #21A3B3 #7A21B3

split-complementary

#B33121 #21B37A #215AB3

monochromatic

#4C150E #7F2317 #B33121 #DA4937 #E4786B

Accessibility & contrast

On white

6.22

#B33121 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#B33121 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33121

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33121	#FFFFFF	#000000	##FFFFFF
##B33121	1.00	6.22	3.38	6.22
#FFFFFF	6.22	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584F1E

Deuteranopia (green-blind)

#786B1B

Tritanopia (blue-blind)

#C5002F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b33121;
/* rgb */ color: rgb(179, 49, 33);
/* oklch */ color: oklch(51.1% 0.169 30.6);

Tailwind

colors: {
  custom: {
    50: '#d3725e',
    500: '#b33121',
    950: '#000000',
  },
}

SCSS

$custom: #b33121;
$custom-light: #d3725e;
$custom-dark: #000000;

JSON

{
  "hex": "#b33121",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 33
  },
  "hsl": {
    "h": 6.575,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.51145,
    "c": 0.16925,
    "h": 30.6
  },
  "luminance": 0.1189
}

Semantic roles & 50–950 ramp

primary

#B33121

secondary

#66BFCA

accent

#D8EC3C

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B33121

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

Preview Lab → · Contrast checker → · Palette generator →