#B33319#B33319

#B33319 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.3% C 0.169 H 33.2°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#B33319
RGB	rgb(179, 51, 25)
HSL	hsl(10, 75%, 40%)
HSV	hsv(10, 86%, 70%)
CMYK	cmyk(0%, 71.5%, 86%, 29.8%)
CIE-LAB	lab(41.26, 50.37, 44.33)
CIE-LCH	lch(41.26, 67.09, 41.35°)
OKLab	oklab(51.28% 0.1413 0.0924)
OKLCH	oklch(51.28% 0.169 33.2)
XYZ	xyz(19.9521, 12.0246, 2.1899)
Luminance	0.1202 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33319 #1999B3

analogous

#B3194C #B33319 #B38019

triadic

#B33319 #19B333 #3319B3

tetradic

#B33319 #4CB319 #1999B3 #8019B3

square

#B33319 #4CB319 #1999B3 #8019B3

split-complementary

#B33319 #19B380 #194CB3

monochromatic

#48140A #7D2412 #B33319 #E14728 #E8755E

Accessibility & contrast

On white

6.17

#B33319 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#B33319 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33319

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33319	#FFFFFF	#000000	##FFFFFF
##B33319	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)

#5A4F14

Deuteranopia (green-blind)

#796C11

Tritanopia (blue-blind)

#C6002F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b33319;
/* rgb */ color: rgb(179, 51, 25);
/* oklch */ color: oklch(51.3% 0.169 33.2);

Tailwind

colors: {
  custom: {
    50: '#d37359',
    500: '#b33319',
    950: '#000000',
  },
}

SCSS

$custom: #b33319;
$custom-light: #d37359;
$custom-dark: #000000;

JSON

{
  "hex": "#b33319",
  "rgb": {
    "r": 179,
    "g": 51,
    "b": 25
  },
  "hsl": {
    "h": 10.13,
    "s": 75.49,
    "l": 40
  },
  "oklch": {
    "l": 0.51282,
    "c": 0.1688,
    "h": 33.2
  },
  "luminance": 0.12022
}

Semantic roles & 50–950 ramp

primary

#B33319

secondary

#5BB9CC

accent

#D2F236

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B33319

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

Preview Lab → · Contrast checker → · Palette generator →