#B23539#B23539

#B23539 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.7% C 0.161 H 23.1°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#B23539
RGB	rgb(178, 53, 57)
HSL	hsl(358, 54%, 45%)
HSV	hsv(358, 70%, 70%)
CMYK	cmyk(0%, 70.2%, 68%, 30.2%)
CIE-LAB	lab(41.70, 50.51, 27.05)
CIE-LCH	lch(41.70, 57.30, 28.17°)
OKLab	oklab(51.7% 0.1482 0.0633)
OKLCH	oklch(51.7% 0.161 23.1)
XYZ	xyz(20.3739, 12.3096, 5.1733)
Luminance	0.1231 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23539 #35B2AE

analogous

#B23577 #B23539 #B26F35

triadic

#B23539 #39B235 #3539B2

tetradic

#B23539 #77B235 #35B2AE #6F35B2

square

#B23539 #77B235 #35B2AE #6F35B2

split-complementary

#B23539 #35B26F #3577B2

monochromatic

#54191B #83272A #B23539 #CD575B #DB8689

Accessibility & contrast

On white

6.07

#B23539 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B23539 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23539

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23539	#FFFFFF	#000000	##FFFFFF
##B23539	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)

#585138

Deuteranopia (green-blind)

#776C35

Tritanopia (blue-blind)

#C40E38

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b23539;
/* rgb */ color: rgb(178, 53, 57);
/* oklch */ color: oklch(51.7% 0.161 23.1);

Tailwind

colors: {
  custom: {
    50: '#d0756f',
    500: '#b23539',
    950: '#000000',
  },
}

SCSS

$custom: #b23539;
$custom-light: #d0756f;
$custom-dark: #000000;

JSON

{
  "hex": "#b23539",
  "rgb": {
    "r": 178,
    "g": 53,
    "b": 57
  },
  "hsl": {
    "h": 358.08,
    "s": 54.113,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51696,
    "c": 0.16117,
    "h": 23.1
  },
  "luminance": 0.12307
}

Semantic roles & 50–950 ramp

primary

#B23539

secondary

#7EC5C3

accent

#DDD94A

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B23539

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

Preview Lab → · Contrast checker → · Palette generator →