#B4191B#B4191B

#B4191B is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.4% C 0.188 H 27.2°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#B4191B
RGB	rgb(180, 25, 27)
HSL	hsl(359, 76%, 40%)
HSV	hsv(359, 86%, 71%)
CMYK	cmyk(0%, 86.1%, 85%, 29.4%)
CIE-LAB	lab(38.69, 58.50, 41.18)
CIE-LCH	lch(38.69, 71.54, 35.14°)
OKLab	oklab(49.41% 0.1669 0.0859)
OKLCH	oklch(49.41% 0.188 27.2)
XYZ	xyz(19.3703, 10.4809, 2.0398)
Luminance	0.1048 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4191B #19B4B2

analogous

#B41968 #B4191B #B46519

triadic

#B4191B #1BB419 #191BB4

tetradic

#B4191B #68B419 #19B4B2 #6519B4

square

#B4191B #68B419 #19B4B2 #6519B4

split-complementary

#B4191B #19B465 #1968B4

monochromatic

#490A0B #7E1213 #B4191B #E1292B #E95F60

Accessibility & contrast

On white

6.78

#B4191B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#B4191B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4191B

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4191B	#FFFFFF	#000000	##FFFFFF
##B4191B	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4618

Deuteranopia (green-blind)

#746711

Tritanopia (blue-blind)

#C7001D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b4191b;
/* rgb */ color: rgb(180, 25, 27);
/* oklch */ color: oklch(49.4% 0.188 27.2);

Tailwind

colors: {
  custom: {
    50: '#d56959',
    500: '#b4191b',
    950: '#000000',
  },
}

SCSS

$custom: #b4191b;
$custom-light: #d56959;
$custom-dark: #000000;

JSON

{
  "hex": "#b4191b",
  "rgb": {
    "r": 180,
    "g": 25,
    "b": 27
  },
  "hsl": {
    "h": 359.226,
    "s": 75.61,
    "l": 40.196
  },
  "oklch": {
    "l": 0.49414,
    "c": 0.1877,
    "h": 27.2
  },
  "luminance": 0.10478
}

Semantic roles & 50–950 ramp

primary

#B4191B

secondary

#5CCDCB

accent

#F2F036

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160703

muted

#847A78

Preview Lab

Preview with #B4191B

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

Preview Lab → · Contrast checker → · Palette generator →