#B43525#B43525

#B43525 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.8% C 0.166 H 30.6°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#B43525
RGB	rgb(180, 53, 37)
HSL	hsl(7, 66%, 43%)
HSV	hsv(7, 79%, 71%)
CMYK	cmyk(0%, 70.6%, 79.4%, 29.4%)
CIE-LAB	lab(41.82, 50.28, 38.86)
CIE-LCH	lch(41.82, 63.55, 37.70°)
OKLab	oklab(51.77% 0.1431 0.0845)
OKLCH	oklch(51.77% 0.166 30.6)
XYZ	xyz(20.4318, 12.3862, 3.0648)
Luminance	0.1238 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43525 #25A4B4

analogous

#B4255D #B43525 #B47C25

triadic

#B43525 #25B435 #3525B4

tetradic

#B43525 #5DB425 #25A4B4 #7C25B4

square

#B43525 #5DB425 #25A4B4 #7C25B4

split-complementary

#B43525 #25B47C #255DB4

monochromatic

#4E1710 #81261B #B43525 #D7503F #E27E71

Accessibility & contrast

On white

6.04

#B43525 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B43525 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43525

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43525	#FFFFFF	#000000	##FFFFFF
##B43525	1.00	6.04	3.48	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5122

Deuteranopia (green-blind)

#7A6D1F

Tritanopia (blue-blind)

#C60032

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b43525;
/* rgb */ color: rgb(180, 53, 37);
/* oklch */ color: oklch(51.8% 0.166 30.6);

Tailwind

colors: {
  custom: {
    50: '#d37461',
    500: '#b43525',
    950: '#000000',
  },
}

SCSS

$custom: #b43525;
$custom-light: #d37461;
$custom-dark: #000000;

JSON

{
  "hex": "#b43525",
  "rgb": {
    "r": 180,
    "g": 53,
    "b": 37
  },
  "hsl": {
    "h": 6.713,
    "s": 65.899,
    "l": 42.549
  },
  "oklch": {
    "l": 0.51773,
    "c": 0.16618,
    "h": 30.6
  },
  "luminance": 0.12383
}

Semantic roles & 50–950 ramp

primary

#B43525

secondary

#6CBEC9

accent

#D6E93F

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B43525

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

Preview Lab → · Contrast checker → · Palette generator →