#B33E1C#B33E1C

#B33E1C is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.6% C 0.159 H 36.2°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#B33E1C
RGB	rgb(179, 62, 28)
HSL	hsl(14, 73%, 41%)
HSV	hsv(14, 84%, 70%)
CMYK	cmyk(0%, 65.4%, 84.4%, 29.8%)
CIE-LAB	lab(42.94, 45.94, 44.40)
CIE-LCH	lch(42.94, 63.89, 44.03°)
OKLab	oklab(52.55% 0.1281 0.0937)
OKLCH	oklch(52.55% 0.159 36.2)
XYZ	xyz(20.5250, 13.1158, 2.5492)
Luminance	0.1311 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33E1C #1C91B3

analogous

#B31C45 #B33E1C #B3891C

triadic

#B33E1C #1CB33E #3E1CB3

tetradic

#B33E1C #45B31C #1C91B3 #891CB3

square

#B33E1C #45B31C #1C91B3 #891CB3

split-complementary

#B33E1C #1CB389 #1C45B3

monochromatic

#49190B #7E2C14 #B33E1C #DE562E #E78063

Accessibility & contrast

On white

5.80

#B33E1C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#B33E1C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33E1C

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33E1C	#FFFFFF	#000000	##FFFFFF
##B33E1C	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605516

Deuteranopia (green-blind)

#7D6F16

Tritanopia (blue-blind)

#C51B38

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33e1c;
/* rgb */ color: rgb(179, 62, 28);
/* oklch */ color: oklch(52.6% 0.159 36.2);

Tailwind

colors: {
  custom: {
    50: '#d3795c',
    500: '#b33e1c',
    950: '#000000',
  },
}

SCSS

$custom: #b33e1c;
$custom-light: #d3795c;
$custom-dark: #000000;

JSON

{
  "hex": "#b33e1c",
  "rgb": {
    "r": 179,
    "g": 62,
    "b": 28
  },
  "hsl": {
    "h": 13.51,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.52552,
    "c": 0.15873,
    "h": 36.2
  },
  "luminance": 0.13113
}

Semantic roles & 50–950 ramp

primary

#B33E1C

secondary

#5FB3CB

accent

#C6F038

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B33E1C

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

Preview Lab → · Contrast checker → · Palette generator →