#B23738#B23738

#B23738 is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.9% C 0.159 H 24.2°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#B23738
RGB	rgb(178, 55, 56)
HSL	hsl(360, 53%, 46%)
HSV	hsv(360, 69%, 70%)
CMYK	cmyk(0%, 69.1%, 68.5%, 30.2%)
CIE-LAB	lab(41.98, 49.67, 27.99)
CIE-LCH	lch(41.98, 57.01, 29.40°)
OKLab	oklab(51.9% 0.1453 0.0653)
OKLCH	oklch(51.9% 0.159 24.2)
XYZ	xyz(20.4423, 12.4858, 5.0742)
Luminance	0.1248 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23738 #37B2B1

analogous

#B23775 #B23738 #B27337

triadic

#B23738 #38B237 #3738B2

tetradic

#B23738 #75B237 #37B2B1 #7337B2

square

#B23738 #75B237 #37B2B1 #7337B2

split-complementary

#B23738 #37B273 #3775B2

monochromatic

#541A1B #832929 #B23738 #CC5A5B #DB898A

Accessibility & contrast

On white

6.01

#B23738 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#B23738 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23738

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23738	#FFFFFF	#000000	##FFFFFF
##B23738	1.00	6.01	3.50	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595237

Deuteranopia (green-blind)

#786D34

Tritanopia (blue-blind)

#C41339

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b23738;
/* rgb */ color: rgb(178, 55, 56);
/* oklch */ color: oklch(51.9% 0.159 24.2);

Tailwind

colors: {
  custom: {
    50: '#d0756e',
    500: '#b23738',
    950: '#000000',
  },
}

SCSS

$custom: #b23738;
$custom-light: #d0756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b23738",
  "rgb": {
    "r": 178,
    "g": 55,
    "b": 56
  },
  "hsl": {
    "h": 359.512,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.51896,
    "c": 0.1593,
    "h": 24.2
  },
  "luminance": 0.12483
}

Semantic roles & 50–950 ramp

primary

#B23738

secondary

#80C5C4

accent

#DCDB4C

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B23738

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

Preview Lab → · Contrast checker → · Palette generator →