#B43128#B43128

#B43128 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.169 H 28.5°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#B43128
RGB	rgb(180, 49, 40)
HSL	hsl(4, 64%, 43%)
HSV	hsv(4, 78%, 71%)
CMYK	cmyk(0%, 72.8%, 77.8%, 29.4%)
CIE-LAB	lab(41.31, 51.90, 36.67)
CIE-LCH	lch(41.31, 63.54, 35.24°)
OKLab	oklab(51.4% 0.1487 0.0807)
OKLCH	oklch(51.4% 0.169 28.5)
XYZ	xyz(20.3061, 12.0563, 3.2650)
Luminance	0.1205 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43128 #28ABB4

analogous

#B42865 #B43128 #B47728

triadic

#B43128 #28B431 #3128B4

tetradic

#B43128 #65B428 #28ABB4 #7728B4

square

#B43128 #65B428 #28ABB4 #7728B4

split-complementary

#B43128 #28B477 #2865B4

monochromatic

#501612 #82231D #B43128 #D54D44 #E17D76

Accessibility & contrast

On white

6.16

#B43128 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B43128 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43128

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43128	#FFFFFF	#000000	##FFFFFF
##B43128	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584F26

Deuteranopia (green-blind)

#786C23

Tritanopia (blue-blind)

#C60030

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b43128;
/* rgb */ color: rgb(180, 49, 40);
/* oklch */ color: oklch(51.4% 0.169 28.5);

Tailwind

colors: {
  custom: {
    50: '#d37363',
    500: '#b43128',
    950: '#000000',
  },
}

SCSS

$custom: #b43128;
$custom-light: #d37363;
$custom-dark: #000000;

JSON

{
  "hex": "#b43128",
  "rgb": {
    "r": 180,
    "g": 49,
    "b": 40
  },
  "hsl": {
    "h": 3.857,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.51396,
    "c": 0.16919,
    "h": 28.5
  },
  "luminance": 0.12053
}

Semantic roles & 50–950 ramp

primary

#B43128

secondary

#70C2C8

accent

#DCE741

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B43128

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

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