#B3301F#B3301F

#B3301F is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.0% C 0.170 H 30.9°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#B3301F
RGB	rgb(179, 48, 31)
HSL	hsl(7, 70%, 41%)
HSV	hsv(7, 83%, 70%)
CMYK	cmyk(0%, 73.2%, 82.7%, 29.8%)
CIE-LAB	lab(40.90, 51.64, 41.06)
CIE-LCH	lch(40.90, 65.97, 38.48°)
OKLab	oklab(51.03% 0.1463 0.0874)
OKLCH	oklch(51.03% 0.17 30.9)
XYZ	xyz(19.8971, 11.7997, 2.5260)
Luminance	0.1180 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3301F #1FA2B3

analogous

#B31F58 #B3301F #B37A1F

triadic

#B3301F #1FB330 #301FB3

tetradic

#B3301F #58B31F #1FA2B3 #7A1FB3

square

#B3301F #58B31F #1FA2B3 #7A1FB3

split-complementary

#B3301F #1FB37A #1F58B3

monochromatic

#4B140D #7F2216 #B3301F #DC4733 #E57668

Accessibility & contrast

On white

6.25

#B3301F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#B3301F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3301F

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3301F	#FFFFFF	#000000	##FFFFFF
##B3301F	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E1B

Deuteranopia (green-blind)

#786B18

Tritanopia (blue-blind)

#C5002D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b3301f;
/* rgb */ color: rgb(179, 48, 31);
/* oklch */ color: oklch(51.0% 0.170 30.9);

Tailwind

colors: {
  custom: {
    50: '#d3725d',
    500: '#b3301f',
    950: '#000000',
  },
}

SCSS

$custom: #b3301f;
$custom-light: #d3725d;
$custom-dark: #000000;

JSON

{
  "hex": "#b3301f",
  "rgb": {
    "r": 179,
    "g": 48,
    "b": 31
  },
  "hsl": {
    "h": 6.892,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.51028,
    "c": 0.1704,
    "h": 30.9
  },
  "luminance": 0.11797
}

Semantic roles & 50–950 ramp

primary

#B3301F

secondary

#64BECA

accent

#D9ED3B

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B3301F

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

Preview Lab → · Contrast checker → · Palette generator →