#B23937#B23937

#B23937 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.1% C 0.157 H 25.3°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#B23937
RGB	rgb(178, 57, 55)
HSL	hsl(1, 53%, 46%)
HSV	hsv(1, 69%, 70%)
CMYK	cmyk(0%, 68%, 69.1%, 30.2%)
CIE-LAB	lab(42.26, 48.80, 28.93)
CIE-LCH	lch(42.26, 56.73, 30.66°)
OKLab	oklab(52.1% 0.1424 0.0672)
OKLCH	oklch(52.1% 0.157 25.3)
XYZ	xyz(20.5150, 12.6700, 4.9790)
Luminance	0.1267 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23937 #37B0B2

analogous

#B23772 #B23937 #B27737

triadic

#B23937 #37B239 #3937B2

tetradic

#B23937 #72B237 #37B0B2 #7737B2

square

#B23937 #72B237 #37B0B2 #7737B2

split-complementary

#B23937 #37B277 #3772B2

monochromatic

#541B1A #832A29 #B23937 #CC5C5A #DB8A89

Accessibility & contrast

On white

5.94

#B23937 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#B23937 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23937

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23937	#FFFFFF	#000000	##FFFFFF
##B23937	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5336

Deuteranopia (green-blind)

#796D33

Tritanopia (blue-blind)

#C4173A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b23937;
/* rgb */ color: rgb(178, 57, 55);
/* oklch */ color: oklch(52.1% 0.157 25.3);

Tailwind

colors: {
  custom: {
    50: '#d0766e',
    500: '#b23937',
    950: '#000000',
  },
}

SCSS

$custom: #b23937;
$custom-light: #d0766e;
$custom-dark: #000000;

JSON

{
  "hex": "#b23937",
  "rgb": {
    "r": 178,
    "g": 57,
    "b": 55
  },
  "hsl": {
    "h": 0.976,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52104,
    "c": 0.15742,
    "h": 25.3
  },
  "luminance": 0.12667
}

Semantic roles & 50–950 ramp

primary

#B23937

secondary

#80C4C5

accent

#DADC4C

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B23937

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

Preview Lab → · Contrast checker → · Palette generator →