#B22527#B22527

#B22527 is a mid, vivid red. Relative luminance 0.109; OKLCH L 50.0% C 0.177 H 25.9°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#B22527
RGB	rgb(178, 37, 39)
HSL	hsl(359, 66%, 42%)
HSV	hsv(359, 79%, 70%)
CMYK	cmyk(0%, 79.2%, 78.1%, 30.2%)
CIE-LAB	lab(39.48, 55.22, 35.18)
CIE-LCH	lch(39.48, 65.48, 32.50°)
OKLab	oklab(49.96% 0.1592 0.0773)
OKLCH	oklch(49.96% 0.177 25.9)
XYZ	xyz(19.3902, 10.9377, 3.0093)
Luminance	0.1094 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B22527 #25B2B0

analogous

#B2256E #B22527 #B26A25

triadic

#B22527 #27B225 #2527B2

tetradic

#B22527 #6EB225 #25B2B0 #6A25B2

square

#B22527 #6EB225 #25B2B0 #6A25B2

split-complementary

#B22527 #25B26A #256EB2

monochromatic

#4D1011 #7F1A1C #B22527 #D73D40 #E17072

Accessibility & contrast

On white

6.59

#B22527 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#B22527 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B22527

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B22527	#FFFFFF	#000000	##FFFFFF
##B22527	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514925

Deuteranopia (green-blind)

#746821

Tritanopia (blue-blind)

#C40028

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b22527;
/* rgb */ color: rgb(178, 37, 39);
/* oklch */ color: oklch(50.0% 0.177 25.9);

Tailwind

colors: {
  custom: {
    50: '#d26d62',
    500: '#b22527',
    950: '#000000',
  },
}

SCSS

$custom: #b22527;
$custom-light: #d26d62;
$custom-dark: #000000;

JSON

{
  "hex": "#b22527",
  "rgb": {
    "r": 178,
    "g": 37,
    "b": 39
  },
  "hsl": {
    "h": 359.149,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.49959,
    "c": 0.17699,
    "h": 25.9
  },
  "luminance": 0.10935
}

Semantic roles & 50–950 ramp

primary

#B22527

secondary

#6BC8C7

accent

#E9E63F

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160805

muted

#847B79

Preview Lab

Preview with #B22527

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

Preview Lab → · Contrast checker → · Palette generator →