#B33C1A#B33C1A

#B33C1A is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.3% C 0.161 H 35.9°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#B33C1A
RGB	rgb(179, 60, 26)
HSL	hsl(13, 75%, 40%)
HSV	hsv(13, 85%, 70%)
CMYK	cmyk(0%, 66.5%, 85.5%, 29.8%)
CIE-LAB	lab(42.60, 46.75, 45.02)
CIE-LCH	lch(42.60, 64.90, 43.92°)
OKLab	oklab(52.3% 0.1303 0.0944)
OKLCH	oklch(52.3% 0.161 35.9)
XYZ	xyz(20.3951, 12.8930, 2.3918)
Luminance	0.1289 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33C1A #1A91B3

analogous

#B31A45 #B33C1A #B3881A

triadic

#B33C1A #1AB33C #3C1AB3

tetradic

#B33C1A #45B31A #1A91B3 #881AB3

square

#B33C1A #45B31A #1A91B3 #881AB3

split-complementary

#B33C1A #1AB388 #1A45B3

monochromatic

#48180A #7E2A12 #B33C1A #E0532A #E87E60

Accessibility & contrast

On white

5.87

#B33C1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B33C1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33C1A

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33C1A	#FFFFFF	#000000	##FFFFFF
##B33C1A	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5414

Deuteranopia (green-blind)

#7C6E13

Tritanopia (blue-blind)

#C51636

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33c1a;
/* rgb */ color: rgb(179, 60, 26);
/* oklch */ color: oklch(52.3% 0.161 35.9);

Tailwind

colors: {
  custom: {
    50: '#d3785a',
    500: '#b33c1a',
    950: '#000000',
  },
}

SCSS

$custom: #b33c1a;
$custom-light: #d3785a;
$custom-dark: #000000;

JSON

{
  "hex": "#b33c1a",
  "rgb": {
    "r": 179,
    "g": 60,
    "b": 26
  },
  "hsl": {
    "h": 13.333,
    "s": 74.634,
    "l": 40.196
  },
  "oklch": {
    "l": 0.52295,
    "c": 0.16087,
    "h": 35.9
  },
  "luminance": 0.1289
}

Semantic roles & 50–950 ramp

primary

#B33C1A

secondary

#5DB3CC

accent

#C8F137

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B33C1A

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

Preview Lab → · Contrast checker → · Palette generator →