#B3301B#B3301B

#B3301B is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.0% C 0.171 H 31.9°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#B3301B
RGB	rgb(179, 48, 27)
HSL	hsl(8, 74%, 40%)
HSV	hsv(8, 85%, 70%)
CMYK	cmyk(0%, 73.2%, 84.9%, 29.8%)
CIE-LAB	lab(40.86, 51.53, 43.03)
CIE-LCH	lch(40.86, 67.14, 39.86°)
OKLab	oklab(50.99% 0.1452 0.0903)
OKLCH	oklch(50.99% 0.171 31.9)
XYZ	xyz(19.8476, 11.7799, 2.2654)
Luminance	0.1178 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3301B #1B9EB3

analogous

#B31B52 #B3301B #B37C1B

triadic

#B3301B #1BB330 #301BB3

tetradic

#B3301B #52B31B #1B9EB3 #7C1BB3

square

#B3301B #52B31B #1B9EB3 #7C1BB3

split-complementary

#B3301B #1BB37C #1B52B3

monochromatic

#49130B #7E2213 #B3301B #DF452C #E77461

Accessibility & contrast

On white

6.26

#B3301B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#B3301B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3301B

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3301B	#FFFFFF	#000000	##FFFFFF
##B3301B	1.00	6.26	3.36	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E17

Deuteranopia (green-blind)

#786B13

Tritanopia (blue-blind)

#C6002D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b3301b;
/* rgb */ color: rgb(179, 48, 27);
/* oklch */ color: oklch(51.0% 0.171 31.9);

Tailwind

colors: {
  custom: {
    50: '#d3725a',
    500: '#b3301b',
    950: '#000000',
  },
}

SCSS

$custom: #b3301b;
$custom-light: #d3725a;
$custom-dark: #000000;

JSON

{
  "hex": "#b3301b",
  "rgb": {
    "r": 179,
    "g": 48,
    "b": 27
  },
  "hsl": {
    "h": 8.289,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.50994,
    "c": 0.17099,
    "h": 31.9
  },
  "luminance": 0.11777
}

Semantic roles & 50–950 ramp

primary

#B3301B

secondary

#5EBDCC

accent

#D7F037

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B3301B

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

Preview Lab → · Contrast checker → · Palette generator →