#B42728#B42728

#B42728 is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.5% C 0.177 H 26.0°. Best body text is #FFFFFF at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#B42728
RGB	rgb(180, 39, 40)
HSL	hsl(360, 64%, 43%)
HSV	hsv(360, 78%, 71%)
CMYK	cmyk(0%, 78.3%, 77.8%, 29.4%)
CIE-LAB	lab(40.10, 55.26, 35.39)
CIE-LCH	lch(40.10, 65.62, 32.63°)
OKLab	oklab(50.5% 0.1593 0.0779)
OKLCH	oklch(50.5% 0.177 26)
XYZ	xyz(19.9333, 11.3107, 3.1407)
Luminance	0.1131 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42728 #27B4B3

analogous

#B4276F #B42728 #B46C27

triadic

#B42728 #28B427 #2728B4

tetradic

#B42728 #6FB427 #27B4B3 #6C27B4

square

#B42728 #6FB427 #27B4B3 #6C27B4

split-complementary

#B42728 #27B46C #276FB4

monochromatic

#4F1112 #821C1D #B42728 #D64243 #E17475

Accessibility & contrast

On white

6.44

#B42728 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#B42728 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42728

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42728	#FFFFFF	#000000	##FFFFFF
##B42728	1.00	6.44	3.26	6.44
#FFFFFF	6.44	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534B26

Deuteranopia (green-blind)

#766922

Tritanopia (blue-blind)

#C60029

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b42728;
/* rgb */ color: rgb(180, 39, 40);
/* oklch */ color: oklch(50.5% 0.177 26.0);

Tailwind

colors: {
  custom: {
    50: '#d46e62',
    500: '#b42728',
    950: '#000000',
  },
}

SCSS

$custom: #b42728;
$custom-light: #d46e62;
$custom-dark: #000000;

JSON

{
  "hex": "#b42728",
  "rgb": {
    "r": 180,
    "g": 39,
    "b": 40
  },
  "hsl": {
    "h": 359.574,
    "s": 64.384,
    "l": 42.941
  },
  "oklch": {
    "l": 0.50497,
    "c": 0.17732,
    "h": 26
  },
  "luminance": 0.11308
}

Semantic roles & 50–950 ramp

primary

#B42728

secondary

#6FC8C8

accent

#E7E640

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160805

muted

#847B79

Preview Lab

Preview with #B42728

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

Preview Lab → · Contrast checker → · Palette generator →