#B43828#B43828

#B43828 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.1% C 0.163 H 30.6°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#B43828
RGB	rgb(180, 56, 40)
HSL	hsl(7, 64%, 43%)
HSV	hsv(7, 78%, 71%)
CMYK	cmyk(0%, 68.9%, 77.8%, 29.4%)
CIE-LAB	lab(42.29, 49.20, 37.70)
CIE-LCH	lch(42.29, 61.98, 37.46°)
OKLab	oklab(52.13% 0.1403 0.0829)
OKLCH	oklch(52.13% 0.163 30.6)
XYZ	xyz(20.6219, 12.6879, 3.3702)
Luminance	0.1268 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43828 #28A4B4

analogous

#B4285E #B43828 #B47E28

triadic

#B43828 #28B438 #3828B4

tetradic

#B43828 #5EB428 #28A4B4 #7E28B4

square

#B43828 #5EB428 #28A4B4 #7E28B4

split-complementary

#B43828 #28B47E #285EB4

monochromatic

#501912 #82281D #B43828 #D55444 #E18276

Accessibility & contrast

On white

5.94

#B43828 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B43828 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43828

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43828	#FFFFFF	#000000	##FFFFFF
##B43828	1.00	5.94	3.54	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5325

Deuteranopia (green-blind)

#7B6E23

Tritanopia (blue-blind)

#C60D35

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b43828;
/* rgb */ color: rgb(180, 56, 40);
/* oklch */ color: oklch(52.1% 0.163 30.6);

Tailwind

colors: {
  custom: {
    50: '#d37663',
    500: '#b43828',
    950: '#000000',
  },
}

SCSS

$custom: #b43828;
$custom-light: #d37663;
$custom-dark: #000000;

JSON

{
  "hex": "#b43828",
  "rgb": {
    "r": 180,
    "g": 56,
    "b": 40
  },
  "hsl": {
    "h": 6.857,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.52132,
    "c": 0.16295,
    "h": 30.6
  },
  "luminance": 0.12685
}

Semantic roles & 50–950 ramp

primary

#B43828

secondary

#70BEC8

accent

#D4E741

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B43828

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

Preview Lab → · Contrast checker → · Palette generator →