#B11D1B#B11D1B

#B11D1B is a mid, vivid red. Relative luminance 0.103; OKLCH L 49.1% C 0.183 H 27.8°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#B11D1B
RGB	rgb(177, 29, 27)
HSL	hsl(1, 74%, 40%)
HSV	hsv(1, 85%, 69%)
CMYK	cmyk(0%, 83.6%, 84.7%, 30.6%)
CIE-LAB	lab(38.39, 56.74, 40.67)
CIE-LCH	lch(38.39, 69.81, 35.64°)
OKLab	oklab(49.08% 0.1617 0.0851)
OKLCH	oklch(49.08% 0.183 27.8)
XYZ	xyz(18.7710, 10.3081, 2.0380)
Luminance	0.1031 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B11D1B #1BAFB1

analogous

#B11B64 #B11D1B #B1681B

triadic

#B11D1B #1BB11D #1D1BB1

tetradic

#B11D1B #64B11B #1BAFB1 #681BB1

square

#B11D1B #64B11B #1BAFB1 #681BB1

split-complementary

#B11D1B #1BB168 #1B64B1

monochromatic

#470C0B #7C1413 #B11D1B #DF2D2B #E76260

Accessibility & contrast

On white

6.86

#B11D1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#B11D1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B11D1B

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B11D1B	#FFFFFF	#000000	##FFFFFF
##B11D1B	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4618

Deuteranopia (green-blind)

#726612

Tritanopia (blue-blind)

#C4001F

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #b11d1b;
/* rgb */ color: rgb(177, 29, 27);
/* oklch */ color: oklch(49.1% 0.183 27.8);

Tailwind

colors: {
  custom: {
    50: '#d36a59',
    500: '#b11d1b',
    950: '#000000',
  },
}

SCSS

$custom: #b11d1b;
$custom-light: #d36a59;
$custom-dark: #000000;

JSON

{
  "hex": "#b11d1b",
  "rgb": {
    "r": 177,
    "g": 29,
    "b": 27
  },
  "hsl": {
    "h": 0.8,
    "s": 73.529,
    "l": 40
  },
  "oklch": {
    "l": 0.49081,
    "c": 0.18272,
    "h": 27.8
  },
  "luminance": 0.10305
}

Semantic roles & 50–950 ramp

primary

#B11D1B

secondary

#5DCACB

accent

#EEF038

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160703

muted

#847A78

Preview Lab

Preview with #B11D1B

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

Preview Lab → · Contrast checker → · Palette generator →