#B4163B#B4163B

#B4163B is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.7% C 0.187 H 16.4°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#B4163B
RGB	rgb(180, 22, 59)
HSL	hsl(346, 78%, 40%)
HSV	hsv(346, 88%, 71%)
CMYK	cmyk(0%, 87.8%, 67.2%, 29.4%)
CIE-LAB	lab(38.89, 60.30, 22.39)
CIE-LCH	lch(38.89, 64.32, 20.37°)
OKLab	oklab(49.69% 0.1797 0.053)
OKLCH	oklch(49.69% 0.187 16.4)
XYZ	xyz(19.9010, 10.5961, 5.1342)
Luminance	0.1059 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4163B #16B48F

analogous

#B4168A #B4163B #B44016

triadic

#B4163B #3BB416 #163BB4

tetradic

#B4163B #8AB416 #16B48F #4016B4

square

#B4163B #8AB416 #16B48F #4016B4

split-complementary

#B4163B #16B440 #168AB4

monochromatic

#470917 #7D0F29 #B4163B #E42350 #EB5A7C

Accessibility & contrast

On white

6.73

#B4163B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#B4163B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4163B

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4163B	#FFFFFF	#000000	##FFFFFF
##B4163B	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A473B

Deuteranopia (green-blind)

#716736

Tritanopia (blue-blind)

#C60028

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b4163b;
/* rgb */ color: rgb(180, 22, 59);
/* oklch */ color: oklch(49.7% 0.187 16.4);

Tailwind

colors: {
  custom: {
    50: '#d36970',
    500: '#b4163b',
    950: '#000000',
  },
}

SCSS

$custom: #b4163b;
$custom-light: #d36970;
$custom-dark: #000000;

JSON

{
  "hex": "#b4163b",
  "rgb": {
    "r": 180,
    "g": 22,
    "b": 59
  },
  "hsl": {
    "h": 345.949,
    "s": 78.218,
    "l": 39.608
  },
  "oklch": {
    "l": 0.49692,
    "c": 0.18738,
    "h": 16.4
  },
  "luminance": 0.10593
}

Semantic roles & 50–950 ramp

primary

#B4163B

secondary

#58CEB2

accent

#F5C733

background

#FEF6F6

surface

#FCECEC

border

#D5C7C7

text

#160707

muted

#847A7A

Preview Lab

Preview with #B4163B

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

Preview Lab → · Contrast checker → · Palette generator →