#B43528#B43528

#B43528 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.8% C 0.166 H 29.6°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B43528
RGB	rgb(180, 53, 40)
HSL	hsl(6, 64%, 43%)
HSV	hsv(6, 78%, 71%)
CMYK	cmyk(0%, 70.6%, 77.8%, 29.4%)
CIE-LAB	lab(41.85, 50.39, 37.25)
CIE-LCH	lch(41.85, 62.66, 36.47°)
OKLab	oklab(51.81% 0.144 0.0819)
OKLCH	oklch(51.81% 0.166 29.6)
XYZ	xyz(20.4809, 12.4058, 3.3232)
Luminance	0.1240 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43528 #28A7B4

analogous

#B42861 #B43528 #B47B28

triadic

#B43528 #28B435 #3528B4

tetradic

#B43528 #61B428 #28A7B4 #7B28B4

square

#B43528 #61B428 #28A7B4 #7B28B4

split-complementary

#B43528 #28B47B #2861B4

monochromatic

#501812 #82261D #B43528 #D55144 #E18076

Accessibility & contrast

On white

6.03

#B43528 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B43528 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43528

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43528	#FFFFFF	#000000	##FFFFFF
##B43528	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)

#5A5125

Deuteranopia (green-blind)

#7A6D23

Tritanopia (blue-blind)

#C60233

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b43528;
/* rgb */ color: rgb(180, 53, 40);
/* oklch */ color: oklch(51.8% 0.166 29.6);

Tailwind

colors: {
  custom: {
    50: '#d37463',
    500: '#b43528',
    950: '#000000',
  },
}

SCSS

$custom: #b43528;
$custom-light: #d37463;
$custom-dark: #000000;

JSON

{
  "hex": "#b43528",
  "rgb": {
    "r": 180,
    "g": 53,
    "b": 40
  },
  "hsl": {
    "h": 5.571,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.51806,
    "c": 0.16567,
    "h": 29.6
  },
  "luminance": 0.12403
}

Semantic roles & 50–950 ramp

primary

#B43528

secondary

#70C0C8

accent

#D7E741

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B43528

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

Preview Lab → · Contrast checker → · Palette generator →