#B23639#B23639

#B23639 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.8% C 0.160 H 23.4°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B23639
RGB	rgb(178, 54, 57)
HSL	hsl(359, 53%, 45%)
HSV	hsv(359, 70%, 70%)
CMYK	cmyk(0%, 69.7%, 68%, 30.2%)
CIE-LAB	lab(41.85, 50.12, 27.23)
CIE-LCH	lch(41.85, 57.04, 28.51°)
OKLab	oklab(51.8% 0.147 0.0637)
OKLCH	oklch(51.8% 0.16 23.4)
XYZ	xyz(20.4200, 12.4017, 5.1886)
Luminance	0.1240 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23639 #36B2AF

analogous

#B23677 #B23639 #B27136

triadic

#B23639 #39B236 #3639B2

tetradic

#B23639 #77B236 #36B2AF #7136B2

square

#B23639 #77B236 #36B2AF #7136B2

split-complementary

#B23639 #36B271 #3677B2

monochromatic

#541A1B #83282A #B23639 #CD595B #DB888A

Accessibility & contrast

On white

6.03

#B23639 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B23639 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23639

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23639	#FFFFFF	#000000	##FFFFFF
##B23639	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585238

Deuteranopia (green-blind)

#776D35

Tritanopia (blue-blind)

#C31138

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b23639;
/* rgb */ color: rgb(178, 54, 57);
/* oklch */ color: oklch(51.8% 0.160 23.4);

Tailwind

colors: {
  custom: {
    50: '#d0756f',
    500: '#b23639',
    950: '#000000',
  },
}

SCSS

$custom: #b23639;
$custom-light: #d0756f;
$custom-dark: #000000;

JSON

{
  "hex": "#b23639",
  "rgb": {
    "r": 178,
    "g": 54,
    "b": 57
  },
  "hsl": {
    "h": 358.548,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.51804,
    "c": 0.16018,
    "h": 23.4
  },
  "luminance": 0.12399
}

Semantic roles & 50–950 ramp

primary

#B23639

secondary

#7FC5C3

accent

#DDD94B

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B23639

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

Preview Lab → · Contrast checker → · Palette generator →