#B33B33#B33B33

#B33B33 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.4% C 0.157 H 27.6°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#B33B33
RGB	rgb(179, 59, 51)
HSL	hsl(4, 56%, 45%)
HSV	hsv(4, 72%, 70%)
CMYK	cmyk(0%, 67%, 71.5%, 29.8%)
CIE-LAB	lab(42.69, 48.10, 31.85)
CIE-LCH	lch(42.69, 57.69, 33.51°)
OKLab	oklab(52.44% 0.1392 0.0728)
OKLCH	oklch(52.44% 0.157 27.6)
XYZ	xyz(20.7541, 12.9536, 4.5388)
Luminance	0.1295 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33B33 #33ABB3

analogous

#B3336B #B33B33 #B37B33

triadic

#B33B33 #33B33B #3B33B3

tetradic

#B33B33 #6BB333 #33ABB3 #7B33B3

square

#B33B33 #6BB333 #33ABB3 #7B33B3

split-complementary

#B33B33 #33B37B #336BB3

monochromatic

#541C18 #832B25 #B33B33 #CE5C55 #DC8A84

Accessibility & contrast

On white

5.85

#B33B33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B33B33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33B33

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33B33	#FFFFFF	#000000	##FFFFFF
##B33B33	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5431

Deuteranopia (green-blind)

#7A6E2F

Tritanopia (blue-blind)

#C51A3A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33b33;
/* rgb */ color: rgb(179, 59, 51);
/* oklch */ color: oklch(52.4% 0.157 27.6);

Tailwind

colors: {
  custom: {
    50: '#d1786b',
    500: '#b33b33',
    950: '#000000',
  },
}

SCSS

$custom: #b33b33;
$custom-light: #d1786b;
$custom-dark: #000000;

JSON

{
  "hex": "#b33b33",
  "rgb": {
    "r": 179,
    "g": 59,
    "b": 51
  },
  "hsl": {
    "h": 3.75,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52443,
    "c": 0.15711,
    "h": 27.6
  },
  "luminance": 0.12951
}

Semantic roles & 50–950 ramp

primary

#B33B33

secondary

#7CC1C6

accent

#D6DF49

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B33B33

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

Preview Lab → · Contrast checker → · Palette generator →