#B3281C#B3281C

#B3281C is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.3% C 0.177 H 29.6°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#B3281C
RGB	rgb(179, 40, 28)
HSL	hsl(5, 73%, 41%)
HSV	hsv(5, 84%, 70%)
CMYK	cmyk(0%, 77.7%, 84.4%, 29.8%)
CIE-LAB	lab(39.90, 54.27, 41.67)
CIE-LCH	lch(39.90, 68.42, 37.52°)
OKLab	oklab(50.27% 0.1539 0.0876)
OKLCH	oklch(50.27% 0.177 29.6)
XYZ	xyz(19.5612, 11.1883, 2.2280)
Luminance	0.1119 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3281C #1CA7B3

analogous

#B31C5B #B3281C #B3731C

triadic

#B3281C #1CB328 #281CB3

tetradic

#B3281C #5BB31C #1CA7B3 #731CB3

square

#B3281C #5BB31C #1CA7B3 #731CB3

split-complementary

#B3281C #1CB373 #1C5BB3

monochromatic

#49100B #7E1C14 #B3281C #DE3C2E #E76D63

Accessibility & contrast

On white

6.49

#B3281C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#B3281C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3281C

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3281C	#FFFFFF	#000000	##FFFFFF
##B3281C	1.00	6.49	3.24	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544B19

Deuteranopia (green-blind)

#766914

Tritanopia (blue-blind)

#C60027

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b3281c;
/* rgb */ color: rgb(179, 40, 28);
/* oklch */ color: oklch(50.3% 0.177 29.6);

Tailwind

colors: {
  custom: {
    50: '#d46e5a',
    500: '#b3281c',
    950: '#000000',
  },
}

SCSS

$custom: #b3281c;
$custom-light: #d46e5a;
$custom-dark: #000000;

JSON

{
  "hex": "#b3281c",
  "rgb": {
    "r": 179,
    "g": 40,
    "b": 28
  },
  "hsl": {
    "h": 4.768,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.50274,
    "c": 0.17711,
    "h": 29.6
  },
  "luminance": 0.11185
}

Semantic roles & 50–950 ramp

primary

#B3281C

secondary

#5FC3CB

accent

#E1F038

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B3281C

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

Preview Lab → · Contrast checker → · Palette generator →