#B23A3F#B23A3F

#B23A3F is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.4% C 0.155 H 22.0°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#B23A3F
RGB	rgb(178, 58, 63)
HSL	hsl(358, 51%, 46%)
HSV	hsv(358, 67%, 70%)
CMYK	cmyk(0%, 67.4%, 64.6%, 30.2%)
CIE-LAB	lab(42.54, 48.84, 24.45)
CIE-LCH	lch(42.54, 54.62, 26.59°)
OKLab	oklab(52.35% 0.1441 0.0582)
OKLCH	oklch(52.35% 0.155 22)
XYZ	xyz(20.7725, 12.8529, 6.0887)
Luminance	0.1285 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23A3F #3AB2AD

analogous

#B23A7B #B23A3F #B2713A

triadic

#B23A3F #3FB23A #3A3FB2

tetradic

#B23A3F #7BB23A #3AB2AD #713AB2

square

#B23A3F #7BB23A #3AB2AD #713AB2

split-complementary

#B23A3F #3AB271 #3A7BB2

monochromatic

#561C1E #842B2F #B23A3F #CB5F63 #DA8D90

Accessibility & contrast

On white

5.88

#B23A3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#B23A3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23A3F

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23A3F	#FFFFFF	#000000	##FFFFFF
##B23A3F	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A543E

Deuteranopia (green-blind)

#786E3C

Tritanopia (blue-blind)

#C31C3D

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b23a3f;
/* rgb */ color: rgb(178, 58, 63);
/* oklch */ color: oklch(52.4% 0.155 22.0);

Tailwind

colors: {
  custom: {
    50: '#d07774',
    500: '#b23a3f',
    950: '#000000',
  },
}

SCSS

$custom: #b23a3f;
$custom-light: #d07774;
$custom-dark: #000000;

JSON

{
  "hex": "#b23a3f",
  "rgb": {
    "r": 178,
    "g": 58,
    "b": 63
  },
  "hsl": {
    "h": 357.5,
    "s": 50.847,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52353,
    "c": 0.15546,
    "h": 22
  },
  "luminance": 0.1285
}

Semantic roles & 50–950 ramp

primary

#B23A3F

secondary

#83C4C2

accent

#DAD44D

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B23A3F

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

Preview Lab → · Contrast checker → · Palette generator →