#B3191B#B3191B

#B3191B is a mid, vivid red. Relative luminance 0.104; OKLCH L 49.2% C 0.187 H 27.2°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#B3191B
RGB	rgb(179, 25, 27)
HSL	hsl(359, 75%, 40%)
HSV	hsv(359, 86%, 70%)
CMYK	cmyk(0%, 86%, 84.9%, 29.8%)
CIE-LAB	lab(38.48, 58.22, 40.91)
CIE-LCH	lch(38.48, 71.16, 35.10°)
OKLab	oklab(49.22% 0.1661 0.0854)
OKLCH	oklch(49.22% 0.187 27.2)
XYZ	xyz(19.1383, 10.3613, 2.0290)
Luminance	0.1036 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3191B #19B3B1

analogous

#B31968 #B3191B #B36419

triadic

#B3191B #1BB319 #191BB3

tetradic

#B3191B #68B319 #19B3B1 #6419B3

square

#B3191B #68B319 #19B3B1 #6419B3

split-complementary

#B3191B #19B364 #1968B3

monochromatic

#480A0B #7D1213 #B3191B #E1282B #E85E60

Accessibility & contrast

On white

6.84

#B3191B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#B3191B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3191B

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3191B	#FFFFFF	#000000	##FFFFFF
##B3191B	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4518

Deuteranopia (green-blind)

#736611

Tritanopia (blue-blind)

#C6001D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b3191b;
/* rgb */ color: rgb(179, 25, 27);
/* oklch */ color: oklch(49.2% 0.187 27.2);

Tailwind

colors: {
  custom: {
    50: '#d46959',
    500: '#b3191b',
    950: '#000000',
  },
}

SCSS

$custom: #b3191b;
$custom-light: #d46959;
$custom-dark: #000000;

JSON

{
  "hex": "#b3191b",
  "rgb": {
    "r": 179,
    "g": 25,
    "b": 27
  },
  "hsl": {
    "h": 359.221,
    "s": 75.49,
    "l": 40
  },
  "oklch": {
    "l": 0.49223,
    "c": 0.1868,
    "h": 27.2
  },
  "luminance": 0.10358
}

Semantic roles & 50–950 ramp

primary

#B3191B

secondary

#5BCCCB

accent

#F2F036

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160703

muted

#847A78

Preview Lab

Preview with #B3191B

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

Preview Lab → · Contrast checker → · Palette generator →