#B11F1F#B11F1F

#B11F1F is a mid, vivid red. Relative luminance 0.104; OKLCH L 49.2% C 0.181 H 27.1°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#B11F1F
RGB	rgb(177, 31, 31)
HSL	hsl(0, 70%, 41%)
HSV	hsv(0, 82%, 69%)
CMYK	cmyk(0%, 82.5%, 82.5%, 30.6%)
CIE-LAB	lab(38.60, 56.34, 38.73)
CIE-LCH	lch(38.60, 68.37, 34.51°)
OKLab	oklab(49.25% 0.1612 0.0824)
OKLCH	oklch(49.25% 0.181 27.1)
XYZ	xyz(18.8711, 10.4291, 2.3155)
Luminance	0.1043 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B11F1F #1FB1B1

analogous

#B11F68 #B11F1F #B1681F

triadic

#B11F1F #1FB11F #1F1FB1

tetradic

#B11F1F #68B11F #1FB1B1 #681FB1

square

#B11F1F #68B11F #1FB1B1 #681FB1

split-complementary

#B11F1F #1FB168 #1F68B1

monochromatic

#490D0D #7D1616 #B11F1F #DB3232 #E46666

Accessibility & contrast

On white

6.81

#B11F1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#B11F1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B11F1F

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B11F1F	#FFFFFF	#000000	##FFFFFF
##B11F1F	1.00	6.81	3.09	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F471D

Deuteranopia (green-blind)

#736617

Tritanopia (blue-blind)

#C30022

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b11f1f;
/* rgb */ color: rgb(177, 31, 31);
/* oklch */ color: oklch(49.2% 0.181 27.1);

Tailwind

colors: {
  custom: {
    50: '#d26b5c',
    500: '#b11f1f',
    950: '#000000',
  },
}

SCSS

$custom: #b11f1f;
$custom-light: #d26b5c;
$custom-dark: #000000;

JSON

{
  "hex": "#b11f1f",
  "rgb": {
    "r": 177,
    "g": 31,
    "b": 31
  },
  "hsl": {
    "h": 0,
    "s": 70.192,
    "l": 40.784
  },
  "oklch": {
    "l": 0.49249,
    "c": 0.18105,
    "h": 27.1
  },
  "luminance": 0.10426
}

Semantic roles & 50–950 ramp

primary

#B11F1F

secondary

#62CACA

accent

#EDED3B

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160704

muted

#847A79

Preview Lab

Preview with #B11F1F

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

Preview Lab → · Contrast checker → · Palette generator →