#B23740#B23740

#B23740 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.0% C 0.159 H 20.6°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#B23740
RGB	rgb(178, 55, 64)
HSL	hsl(356, 53%, 46%)
HSV	hsv(356, 69%, 70%)
CMYK	cmyk(0%, 69.1%, 64%, 30.2%)
CIE-LAB	lab(42.11, 50.13, 23.29)
CIE-LCH	lch(42.11, 55.28, 24.92°)
OKLab	oklab(52.04% 0.1484 0.0557)
OKLCH	oklch(52.04% 0.159 20.6)
XYZ	xyz(20.6538, 12.5705, 6.1883)
Luminance	0.1257 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23740 #37B2A9

analogous

#B2377D #B23740 #B26B37

triadic

#B23740 #40B237 #3740B2

tetradic

#B23740 #7DB237 #37B2A9 #6B37B2

square

#B23740 #7DB237 #37B2A9 #6B37B2

split-complementary

#B23740 #37B26B #377DB2

monochromatic

#541A1E #83292F #B23740 #CC5A62 #DB898F

Accessibility & contrast

On white

5.98

#B23740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B23740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23740

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23740	#FFFFFF	#000000	##FFFFFF
##B23740	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58533F

Deuteranopia (green-blind)

#776D3D

Tritanopia (blue-blind)

#C3163B

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b23740;
/* rgb */ color: rgb(178, 55, 64);
/* oklch */ color: oklch(52.0% 0.159 20.6);

Tailwind

colors: {
  custom: {
    50: '#d07674',
    500: '#b23740',
    950: '#000000',
  },
}

SCSS

$custom: #b23740;
$custom-light: #d07674;
$custom-dark: #000000;

JSON

{
  "hex": "#b23740",
  "rgb": {
    "r": 178,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 355.61,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52036,
    "c": 0.15855,
    "h": 20.6
  },
  "luminance": 0.12568
}

Semantic roles & 50–950 ramp

primary

#B23740

secondary

#80C5C0

accent

#DCD24C

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B23740

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

Preview Lab → · Contrast checker → · Palette generator →