#B3281F#B3281F

#B3281F is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.3% C 0.177 H 28.9°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#B3281F
RGB	rgb(179, 40, 31)
HSL	hsl(4, 70%, 41%)
HSV	hsv(4, 83%, 70%)
CMYK	cmyk(0%, 77.7%, 82.7%, 29.8%)
CIE-LAB	lab(39.92, 54.35, 40.13)
CIE-LCH	lch(39.92, 67.57, 36.44°)
OKLab	oklab(50.3% 0.1548 0.0853)
OKLCH	oklch(50.3% 0.177 28.9)
XYZ	xyz(19.5989, 11.2034, 2.4266)
Luminance	0.1120 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3281F #1FAAB3

analogous

#B31F60 #B3281F #B3721F

triadic

#B3281F #1FB328 #281FB3

tetradic

#B3281F #60B31F #1FAAB3 #721FB3

square

#B3281F #60B31F #1FAAB3 #721FB3

split-complementary

#B3281F #1FB372 #1F60B3

monochromatic

#4B110D #7F1C16 #B3281F #DC3E33 #E56F68

Accessibility & contrast

On white

6.48

#B3281F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#B3281F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3281F

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3281F	#FFFFFF	#000000	##FFFFFF
##B3281F	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544B1C

Deuteranopia (green-blind)

#766918

Tritanopia (blue-blind)

#C60028

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b3281f;
/* rgb */ color: rgb(179, 40, 31);
/* oklch */ color: oklch(50.3% 0.177 28.9);

Tailwind

colors: {
  custom: {
    50: '#d36e5c',
    500: '#b3281f',
    950: '#000000',
  },
}

SCSS

$custom: #b3281f;
$custom-light: #d36e5c;
$custom-dark: #000000;

JSON

{
  "hex": "#b3281f",
  "rgb": {
    "r": 179,
    "g": 40,
    "b": 31
  },
  "hsl": {
    "h": 3.649,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50301,
    "c": 0.17672,
    "h": 28.9
  },
  "luminance": 0.112
}

Semantic roles & 50–950 ramp

primary

#B3281F

secondary

#64C4CA

accent

#E2ED3B

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B3281F

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

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