#B23143#B23143

#B23143 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.5% C 0.165 H 17.5°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#B23143
RGB	rgb(178, 49, 67)
HSL	hsl(352, 57%, 45%)
HSV	hsv(352, 72%, 70%)
CMYK	cmyk(0%, 72.5%, 62.4%, 30.2%)
CIE-LAB	lab(41.33, 52.63, 20.43)
CIE-LCH	lch(41.33, 56.45, 21.22°)
OKLab	oklab(51.47% 0.157 0.0495)
OKLCH	oklch(51.47% 0.165 17.5)
XYZ	xyz(20.4736, 12.0698, 6.5607)
Luminance	0.1207 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23143 #31B2A0

analogous

#B23184 #B23143 #B26031

triadic

#B23143 #43B231 #3143B2

tetradic

#B23143 #84B231 #31B2A0 #6031B2

square

#B23143 #84B231 #31B2A0 #6031B2

split-complementary

#B23143 #31B260 #3184B2

monochromatic

#52171F #822431 #B23143 #CF5163 #DC818E

Accessibility & contrast

On white

6.15

#B23143 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B23143 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23143

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23143	#FFFFFF	#000000	##FFFFFF
##B23143	1.00	6.15	3.41	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#545043

Deuteranopia (green-blind)

#756B3F

Tritanopia (blue-blind)

#C30639

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b23143;
/* rgb */ color: rgb(178, 49, 67);
/* oklch */ color: oklch(51.5% 0.165 17.5);

Tailwind

colors: {
  custom: {
    50: '#d07377',
    500: '#b23143',
    950: '#000000',
  },
}

SCSS

$custom: #b23143;
$custom-light: #d07377;
$custom-dark: #000000;

JSON

{
  "hex": "#b23143",
  "rgb": {
    "r": 178,
    "g": 49,
    "b": 67
  },
  "hsl": {
    "h": 351.628,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51471,
    "c": 0.16458,
    "h": 17.5
  },
  "luminance": 0.12067
}

Semantic roles & 50–950 ramp

primary

#B23143

secondary

#79C5BB

accent

#E0CB48

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B23143

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

Preview Lab → · Contrast checker → · Palette generator →