#B33C1C#B33C1C

#B33C1C is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.3% C 0.161 H 35.5°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#B33C1C
RGB	rgb(179, 60, 28)
HSL	hsl(13, 73%, 41%)
HSV	hsv(13, 84%, 70%)
CMYK	cmyk(0%, 66.5%, 84.4%, 29.8%)
CIE-LAB	lab(42.62, 46.80, 44.11)
CIE-LCH	lch(42.62, 64.31, 43.31°)
OKLab	oklab(52.31% 0.1308 0.0931)
OKLCH	oklch(52.31% 0.161 35.5)
XYZ	xyz(20.4182, 12.9023, 2.5136)
Luminance	0.1290 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33C1C #1C93B3

analogous

#B31C48 #B33C1C #B3871C

triadic

#B33C1C #1CB33C #3C1CB3

tetradic

#B33C1C #48B31C #1C93B3 #871CB3

square

#B33C1C #48B31C #1C93B3 #871CB3

split-complementary

#B33C1C #1CB387 #1C48B3

monochromatic

#49190B #7E2A14 #B33C1C #DE532E #E77F63

Accessibility & contrast

On white

5.87

#B33C1C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B33C1C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33C1C

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33C1C	#FFFFFF	#000000	##FFFFFF
##B33C1C	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)

#5F5416

Deuteranopia (green-blind)

#7C6E16

Tritanopia (blue-blind)

#C51736

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33c1c;
/* rgb */ color: rgb(179, 60, 28);
/* oklch */ color: oklch(52.3% 0.161 35.5);

Tailwind

colors: {
  custom: {
    50: '#d3785c',
    500: '#b33c1c',
    950: '#000000',
  },
}

SCSS

$custom: #b33c1c;
$custom-light: #d3785c;
$custom-dark: #000000;

JSON

{
  "hex": "#b33c1c",
  "rgb": {
    "r": 179,
    "g": 60,
    "b": 28
  },
  "hsl": {
    "h": 12.715,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.5231,
    "c": 0.16052,
    "h": 35.5
  },
  "luminance": 0.12899
}

Semantic roles & 50–950 ramp

primary

#B33C1C

secondary

#5FB4CB

accent

#C9F038

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B33C1C

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

Preview Lab → · Contrast checker → · Palette generator →