#B33A1A#B33A1A

#B33A1A is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.1% C 0.163 H 35.2°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#B33A1A
RGB	rgb(179, 58, 26)
HSL	hsl(13, 75%, 40%)
HSV	hsv(13, 85%, 70%)
CMYK	cmyk(0%, 67.6%, 85.5%, 29.8%)
CIE-LAB	lab(42.29, 47.59, 44.75)
CIE-LCH	lch(42.29, 65.33, 43.24°)
OKLab	oklab(52.06% 0.1329 0.0938)
OKLCH	oklch(52.06% 0.163 35.2)
XYZ	xyz(20.2923, 12.6875, 2.3575)
Luminance	0.1268 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33A1A #1A93B3

analogous

#B31A46 #B33A1A #B3861A

triadic

#B33A1A #1AB33A #3A1AB3

tetradic

#B33A1A #46B31A #1A93B3 #861AB3

square

#B33A1A #46B31A #1A93B3 #861AB3

split-complementary

#B33A1A #1AB386 #1A46B3

monochromatic

#48170A #7E2912 #B33A1A #E0502A #E87C60

Accessibility & contrast

On white

5.94

#B33A1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B33A1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33A1A

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33A1A	#FFFFFF	#000000	##FFFFFF
##B33A1A	1.00	5.94	3.54	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5314

Deuteranopia (green-blind)

#7B6E13

Tritanopia (blue-blind)

#C51134

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b33a1a;
/* rgb */ color: rgb(179, 58, 26);
/* oklch */ color: oklch(52.1% 0.163 35.2);

Tailwind

colors: {
  custom: {
    50: '#d3775a',
    500: '#b33a1a',
    950: '#000000',
  },
}

SCSS

$custom: #b33a1a;
$custom-light: #d3775a;
$custom-dark: #000000;

JSON

{
  "hex": "#b33a1a",
  "rgb": {
    "r": 179,
    "g": 58,
    "b": 26
  },
  "hsl": {
    "h": 12.549,
    "s": 74.634,
    "l": 40.196
  },
  "oklch": {
    "l": 0.52059,
    "c": 0.16263,
    "h": 35.2
  },
  "luminance": 0.12684
}

Semantic roles & 50–950 ramp

primary

#B33A1A

secondary

#5DB5CC

accent

#CAF137

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B33A1A

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

Preview Lab → · Contrast checker → · Palette generator →