#B43521#B43521

#B43521 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.7% C 0.167 H 31.7°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#B43521
RGB	rgb(180, 53, 33)
HSL	hsl(8, 69%, 42%)
HSV	hsv(8, 82%, 71%)
CMYK	cmyk(0%, 70.6%, 81.7%, 29.4%)
CIE-LAB	lab(41.79, 50.15, 40.94)
CIE-LCH	lch(41.79, 64.74, 39.22°)
OKLab	oklab(51.73% 0.1419 0.0878)
OKLCH	oklch(51.73% 0.167 31.7)
XYZ	xyz(20.3724, 12.3624, 2.7520)
Luminance	0.1236 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43521 #21A0B4

analogous

#B42157 #B43521 #B47F21

triadic

#B43521 #21B435 #3521B4

tetradic

#B43521 #57B421 #21A0B4 #7F21B4

square

#B43521 #57B421 #21A0B4 #7F21B4

split-complementary

#B43521 #21B47F #2157B4

monochromatic

#4D170E #802618 #B43521 #DA4E38 #E47C6B

Accessibility & contrast

On white

6.05

#B43521 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B43521 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43521

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43521	#FFFFFF	#000000	##FFFFFF
##B43521	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B511D

Deuteranopia (green-blind)

#7A6D1B

Tritanopia (blue-blind)

#C60032

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b43521;
/* rgb */ color: rgb(180, 53, 33);
/* oklch */ color: oklch(51.7% 0.167 31.7);

Tailwind

colors: {
  custom: {
    50: '#d3745e',
    500: '#b43521',
    950: '#000000',
  },
}

SCSS

$custom: #b43521;
$custom-light: #d3745e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43521",
  "rgb": {
    "r": 180,
    "g": 53,
    "b": 33
  },
  "hsl": {
    "h": 8.163,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.51734,
    "c": 0.16685,
    "h": 31.7
  },
  "luminance": 0.12359
}

Semantic roles & 50–950 ramp

primary

#B43521

secondary

#67BCCA

accent

#D4EC3C

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43521

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

Preview Lab → · Contrast checker → · Palette generator →