#B4282B#B4282B

#B4282B is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.6% C 0.176 H 25.3°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#B4282B
RGB	rgb(180, 40, 43)
HSL	hsl(359, 64%, 43%)
HSV	hsv(359, 78%, 71%)
CMYK	cmyk(0%, 77.8%, 76.1%, 29.4%)
CIE-LAB	lab(40.24, 55.06, 33.80)
CIE-LCH	lch(40.24, 64.61, 31.54°)
OKLab	oklab(50.62% 0.1594 0.0752)
OKLCH	oklch(50.62% 0.176 25.3)
XYZ	xyz(20.0196, 11.3985, 3.4310)
Luminance	0.1139 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4282B #28B4B1

analogous

#B42871 #B4282B #B46B28

triadic

#B4282B #2BB428 #282BB4

tetradic

#B4282B #71B428 #28B4B1 #6B28B4

square

#B4282B #71B428 #28B4B1 #6B28B4

split-complementary

#B4282B #28B46B #2871B4

monochromatic

#501213 #821D1F #B4282B #D54447 #E17678

Accessibility & contrast

On white

6.40

#B4282B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#B4282B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4282B

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4282B	#FFFFFF	#000000	##FFFFFF
##B4282B	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534C29

Deuteranopia (green-blind)

#766A25

Tritanopia (blue-blind)

#C6002B

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #b4282b;
/* rgb */ color: rgb(180, 40, 43);
/* oklch */ color: oklch(50.6% 0.176 25.3);

Tailwind

colors: {
  custom: {
    50: '#d36f65',
    500: '#b4282b',
    950: '#000000',
  },
}

SCSS

$custom: #b4282b;
$custom-light: #d36f65;
$custom-dark: #000000;

JSON

{
  "hex": "#b4282b",
  "rgb": {
    "r": 180,
    "g": 40,
    "b": 43
  },
  "hsl": {
    "h": 358.714,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.50616,
    "c": 0.17622,
    "h": 25.3
  },
  "luminance": 0.11395
}

Semantic roles & 50–950 ramp

primary

#B4282B

secondary

#70C8C6

accent

#E7E341

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160805

muted

#847B7A

Preview Lab

Preview with #B4282B

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

Preview Lab → · Contrast checker → · Palette generator →