#B23537#B23537

#B23537 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.7% C 0.161 H 24.0°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#B23537
RGB	rgb(178, 53, 55)
HSL	hsl(359, 54%, 45%)
HSV	hsv(359, 70%, 70%)
CMYK	cmyk(0%, 70.2%, 69.1%, 30.2%)
CIE-LAB	lab(41.67, 50.41, 28.22)
CIE-LCH	lch(41.67, 57.77, 29.24°)
OKLab	oklab(51.66% 0.1475 0.0656)
OKLCH	oklch(51.66% 0.161 24)
XYZ	xyz(20.3250, 12.2900, 4.9157)
Luminance	0.1229 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23537 #35B2B0

analogous

#B23575 #B23537 #B27135

triadic

#B23537 #37B235 #3537B2

tetradic

#B23537 #75B235 #35B2B0 #7135B2

square

#B23537 #75B235 #35B2B0 #7135B2

split-complementary

#B23537 #35B271 #3575B2

monochromatic

#54191A #832728 #B23537 #CD5759 #DB8688

Accessibility & contrast

On white

6.07

#B23537 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B23537 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23537

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23537	#FFFFFF	#000000	##FFFFFF
##B23537	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585136

Deuteranopia (green-blind)

#776C33

Tritanopia (blue-blind)

#C40D37

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b23537;
/* rgb */ color: rgb(178, 53, 55);
/* oklch */ color: oklch(51.7% 0.161 24.0);

Tailwind

colors: {
  custom: {
    50: '#d1746e',
    500: '#b23537',
    950: '#000000',
  },
}

SCSS

$custom: #b23537;
$custom-light: #d1746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b23537",
  "rgb": {
    "r": 178,
    "g": 53,
    "b": 55
  },
  "hsl": {
    "h": 359.04,
    "s": 54.113,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51664,
    "c": 0.16138,
    "h": 24
  },
  "luminance": 0.12287
}

Semantic roles & 50–950 ramp

primary

#B23537

secondary

#7EC5C4

accent

#DDDB4A

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B23537

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

Preview Lab → · Contrast checker → · Palette generator →