#B33F1C#B33F1C

#B33F1C is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.7% C 0.158 H 36.6°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#B33F1C
RGB	rgb(179, 63, 28)
HSL	hsl(14, 73%, 41%)
HSV	hsv(14, 84%, 70%)
CMYK	cmyk(0%, 64.8%, 84.4%, 29.8%)
CIE-LAB	lab(43.10, 45.50, 44.55)
CIE-LCH	lch(43.10, 63.67, 44.40°)
OKLab	oklab(52.68% 0.1267 0.0941)
OKLCH	oklch(52.68% 0.158 36.6)
XYZ	xyz(20.5799, 13.2256, 2.5675)
Luminance	0.1322 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F1C #1C90B3

analogous

#B31C45 #B33F1C #B38A1C

triadic

#B33F1C #1CB33F #3F1CB3

tetradic

#B33F1C #45B31C #1C90B3 #8A1CB3

square

#B33F1C #45B31C #1C90B3 #8A1CB3

split-complementary

#B33F1C #1CB38A #1C45B3

monochromatic

#491A0B #7E2C14 #B33F1C #DE572E #E78163

Accessibility & contrast

On white

5.76

#B33F1C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#B33F1C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F1C

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F1C	#FFFFFF	#000000	##FFFFFF
##B33F1C	1.00	5.76	3.64	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#615516

Deuteranopia (green-blind)

#7D6F16

Tritanopia (blue-blind)

#C51E38

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33f1c;
/* rgb */ color: rgb(179, 63, 28);
/* oklch */ color: oklch(52.7% 0.158 36.6);

Tailwind

colors: {
  custom: {
    50: '#d2795c',
    500: '#b33f1c',
    950: '#000000',
  },
}

SCSS

$custom: #b33f1c;
$custom-light: #d2795c;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f1c",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 28
  },
  "hsl": {
    "h": 13.907,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.52675,
    "c": 0.15784,
    "h": 36.6
  },
  "luminance": 0.13223
}

Semantic roles & 50–950 ramp

primary

#B33F1C

secondary

#5FB2CB

accent

#C5F038

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B33F1C

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

Preview Lab → · Contrast checker → · Palette generator →