#B3281B#B3281B

#B3281B is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.3% C 0.177 H 29.9°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#B3281B
RGB	rgb(179, 40, 27)
HSL	hsl(5, 74%, 40%)
HSV	hsv(5, 85%, 70%)
CMYK	cmyk(0%, 77.7%, 84.9%, 29.8%)
CIE-LAB	lab(39.89, 54.25, 42.17)
CIE-LCH	lch(39.89, 68.71, 37.86°)
OKLab	oklab(50.27% 0.1537 0.0883)
OKLCH	oklch(50.27% 0.177 29.9)
XYZ	xyz(19.5495, 11.1836, 2.1660)
Luminance	0.1118 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3281B #1BA6B3

analogous

#B31B5A #B3281B #B3741B

triadic

#B3281B #1BB328 #281BB3

tetradic

#B3281B #5AB31B #1BA6B3 #741BB3

square

#B3281B #5AB31B #1BA6B3 #741BB3

split-complementary

#B3281B #1BB374 #1B5AB3

monochromatic

#49100B #7E1C13 #B3281B #DF3B2C #E76D61

Accessibility & contrast

On white

6.49

#B3281B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#B3281B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3281B

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3281B	#FFFFFF	#000000	##FFFFFF
##B3281B	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)

#544A17

Deuteranopia (green-blind)

#766912

Tritanopia (blue-blind)

#C60027

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b3281b;
/* rgb */ color: rgb(179, 40, 27);
/* oklch */ color: oklch(50.3% 0.177 29.9);

Tailwind

colors: {
  custom: {
    50: '#d46e5a',
    500: '#b3281b',
    950: '#000000',
  },
}

SCSS

$custom: #b3281b;
$custom-light: #d46e5a;
$custom-dark: #000000;

JSON

{
  "hex": "#b3281b",
  "rgb": {
    "r": 179,
    "g": 40,
    "b": 27
  },
  "hsl": {
    "h": 5.132,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.50266,
    "c": 0.17723,
    "h": 29.9
  },
  "luminance": 0.1118
}

Semantic roles & 50–950 ramp

primary

#B3281B

secondary

#5EC2CC

accent

#E1F037

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B3281B

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

Preview Lab → · Contrast checker → · Palette generator →