#B11F1C#B11F1C

#B11F1C is a mid, vivid red. Relative luminance 0.104; OKLCH L 49.2% C 0.181 H 27.9°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#B11F1C
RGB	rgb(177, 31, 28)
HSL	hsl(1, 73%, 40%)
HSV	hsv(1, 84%, 69%)
CMYK	cmyk(0%, 82.5%, 84.2%, 30.6%)
CIE-LAB	lab(38.58, 56.26, 40.32)
CIE-LCH	lch(38.58, 69.21, 35.63°)
OKLab	oklab(49.22% 0.1604 0.0848)
OKLCH	oklch(49.22% 0.181 27.9)
XYZ	xyz(18.8334, 10.4140, 2.1169)
Luminance	0.1041 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B11F1C #1CAEB1

analogous

#B11C63 #B11F1C #B1691C

triadic

#B11F1C #1CB11F #1F1CB1

tetradic

#B11F1C #63B11C #1CAEB1 #691CB1

square

#B11F1C #63B11C #1CAEB1 #691CB1

split-complementary

#B11F1C #1CB169 #1C63B1

monochromatic

#470C0B #7C1614 #B11F1C #DE302C #E66461

Accessibility & contrast

On white

6.81

#B11F1C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#B11F1C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B11F1C

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B11F1C	#FFFFFF	#000000	##FFFFFF
##B11F1C	1.00	6.81	3.08	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4719

Deuteranopia (green-blind)

#736613

Tritanopia (blue-blind)

#C40021

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b11f1c;
/* rgb */ color: rgb(177, 31, 28);
/* oklch */ color: oklch(49.2% 0.181 27.9);

Tailwind

colors: {
  custom: {
    50: '#d26b5a',
    500: '#b11f1c',
    950: '#000000',
  },
}

SCSS

$custom: #b11f1c;
$custom-light: #d26b5a;
$custom-dark: #000000;

JSON

{
  "hex": "#b11f1c",
  "rgb": {
    "r": 177,
    "g": 31,
    "b": 28
  },
  "hsl": {
    "h": 1.208,
    "s": 72.683,
    "l": 40.196
  },
  "oklch": {
    "l": 0.49221,
    "c": 0.18139,
    "h": 27.9
  },
  "luminance": 0.10411
}

Semantic roles & 50–950 ramp

primary

#B11F1C

secondary

#5EC8CB

accent

#ECEF38

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160704

muted

#847A79

Preview Lab

Preview with #B11F1C

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

Preview Lab → · Contrast checker → · Palette generator →