#B43121#B43121

#B43121 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.3% C 0.170 H 30.6°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#B43121
RGB	rgb(180, 49, 33)
HSL	hsl(7, 69%, 42%)
HSV	hsv(7, 82%, 71%)
CMYK	cmyk(0%, 72.8%, 81.7%, 29.4%)
CIE-LAB	lab(41.24, 51.66, 40.41)
CIE-LCH	lch(41.24, 65.59, 38.03°)
OKLab	oklab(51.32% 0.1466 0.0866)
OKLCH	oklch(51.32% 0.17 30.6)
XYZ	xyz(20.1976, 12.0129, 2.6938)
Luminance	0.1201 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43121 #21A4B4

analogous

#B4215A #B43121 #B47B21

triadic

#B43121 #21B431 #3121B4

tetradic

#B43121 #5AB421 #21A4B4 #7B21B4

square

#B43121 #5AB421 #21A4B4 #7B21B4

split-complementary

#B43121 #21B47B #215AB4

monochromatic

#4D150E #802318 #B43121 #DA4938 #E4796B

Accessibility & contrast

On white

6.17

#B43121 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#B43121 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43121

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43121	#FFFFFF	#000000	##FFFFFF
##B43121	1.00	6.17	3.40	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584F1E

Deuteranopia (green-blind)

#796C1B

Tritanopia (blue-blind)

#C7002F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b43121;
/* rgb */ color: rgb(180, 49, 33);
/* oklch */ color: oklch(51.3% 0.170 30.6);

Tailwind

colors: {
  custom: {
    50: '#d4725e',
    500: '#b43121',
    950: '#000000',
  },
}

SCSS

$custom: #b43121;
$custom-light: #d4725e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43121",
  "rgb": {
    "r": 180,
    "g": 49,
    "b": 33
  },
  "hsl": {
    "h": 6.531,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.51322,
    "c": 0.17027,
    "h": 30.6
  },
  "luminance": 0.1201
}

Semantic roles & 50–950 ramp

primary

#B43121

secondary

#67BFCA

accent

#D9EC3C

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43121

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

Preview Lab → · Contrast checker → · Palette generator →