#B23137#B23137

#B23137 is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.3% C 0.165 H 22.8°. Best body text is #FFFFFF at 6.20:1 contrast (WCAG AA passes).

Color values

HEX	#B23137
RGB	rgb(178, 49, 55)
HSL	hsl(357, 57%, 45%)
HSV	hsv(357, 72%, 70%)
CMYK	cmyk(0%, 72.5%, 69.1%, 30.2%)
CIE-LAB	lab(41.12, 51.93, 27.55)
CIE-LCH	lch(41.12, 58.78, 27.95°)
OKLab	oklab(51.25% 0.1523 0.0641)
OKLCH	oklch(51.25% 0.165 22.8)
XYZ	xyz(20.1502, 11.9404, 4.8574)
Luminance	0.1194 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23137 #31B2AC

analogous

#B23178 #B23137 #B26B31

triadic

#B23137 #37B231 #3137B2

tetradic

#B23137 #78B231 #31B2AC #6B31B2

square

#B23137 #78B231 #31B2AC #6B31B2

split-complementary

#B23137 #31B26B #3178B2

monochromatic

#521719 #822428 #B23137 #CF5157 #DC8185

Accessibility & contrast

On white

6.20

#B23137 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#B23137 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23137

6.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23137	#FFFFFF	#000000	##FFFFFF
##B23137	1.00	6.20	3.39	6.20
#FFFFFF	6.20	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564F36

Deuteranopia (green-blind)

#766B33

Tritanopia (blue-blind)

#C40034

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b23137;
/* rgb */ color: rgb(178, 49, 55);
/* oklch */ color: oklch(51.3% 0.165 22.8);

Tailwind

colors: {
  custom: {
    50: '#d1736e',
    500: '#b23137',
    950: '#000000',
  },
}

SCSS

$custom: #b23137;
$custom-light: #d1736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b23137",
  "rgb": {
    "r": 178,
    "g": 49,
    "b": 55
  },
  "hsl": {
    "h": 357.209,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51252,
    "c": 0.16522,
    "h": 22.8
  },
  "luminance": 0.11937
}

Semantic roles & 50–950 ramp

primary

#B23137

secondary

#79C5C2

accent

#E0D948

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B23137

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

Preview Lab → · Contrast checker → · Palette generator →