#B11B1A#B11B1A

#B11B1A is a mid, vivid red. Relative luminance 0.102; OKLCH L 48.9% C 0.184 H 27.7°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#B11B1A
RGB	rgb(177, 27, 26)
HSL	hsl(0, 74%, 40%)
HSV	hsv(0, 85%, 69%)
CMYK	cmyk(0%, 84.7%, 85.3%, 30.6%)
CIE-LAB	lab(38.21, 57.19, 41.04)
CIE-LCH	lch(38.21, 70.39, 35.66°)
OKLab	oklab(48.95% 0.1629 0.0855)
OKLCH	oklch(48.95% 0.184 27.7)
XYZ	xyz(18.7122, 10.2087, 1.9623)
Luminance	0.1021 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B11B1A #1AB0B1

analogous

#B11A65 #B11B1A #B1661A

triadic

#B11B1A #1AB11B #1B1AB1

tetradic

#B11B1A #65B11A #1AB0B1 #661AB1

square

#B11B1A #65B11A #1AB0B1 #661AB1

split-complementary

#B11B1A #1AB166 #1A65B1

monochromatic

#460B0A #7C1312 #B11B1A #E02A29 #E75F5E

Accessibility & contrast

On white

6.91

#B11B1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#B11B1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B11B1A

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B11B1A	#FFFFFF	#000000	##FFFFFF
##B11B1A	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4517

Deuteranopia (green-blind)

#726510

Tritanopia (blue-blind)

#C4001E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #b11b1a;
/* rgb */ color: rgb(177, 27, 26);
/* oklch */ color: oklch(48.9% 0.184 27.7);

Tailwind

colors: {
  custom: {
    50: '#d36958',
    500: '#b11b1a',
    950: '#000000',
  },
}

SCSS

$custom: #b11b1a;
$custom-light: #d36958;
$custom-dark: #000000;

JSON

{
  "hex": "#b11b1a",
  "rgb": {
    "r": 177,
    "g": 27,
    "b": 26
  },
  "hsl": {
    "h": 0.397,
    "s": 74.384,
    "l": 39.804
  },
  "oklch": {
    "l": 0.48948,
    "c": 0.18399,
    "h": 27.7
  },
  "luminance": 0.10206
}

Semantic roles & 50–950 ramp

primary

#B11B1A

secondary

#5BCBCB

accent

#F0F137

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160703

muted

#847A78

Preview Lab

Preview with #B11B1A

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

Preview Lab → · Contrast checker → · Palette generator →