#B53128#B53128

#B53128 is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.6% C 0.170 H 28.5°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#B53128
RGB	rgb(181, 49, 40)
HSL	hsl(4, 64%, 43%)
HSV	hsv(4, 78%, 71%)
CMYK	cmyk(0%, 72.9%, 77.9%, 29%)
CIE-LAB	lab(41.50, 52.22, 36.93)
CIE-LCH	lch(41.50, 63.96, 35.27°)
OKLab	oklab(51.57% 0.1496 0.0812)
OKLCH	oklch(51.57% 0.17 28.5)
XYZ	xyz(20.5398, 12.1768, 3.2759)
Luminance	0.1217 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53128 #28ACB5

analogous

#B52865 #B53128 #B57728

triadic

#B53128 #28B531 #3128B5

tetradic

#B53128 #65B528 #28ACB5 #7728B5

square

#B53128 #65B528 #28ACB5 #7728B5

split-complementary

#B53128 #28B577 #2865B5

monochromatic

#511612 #83231D #B53128 #D64E44 #E17D77

Accessibility & contrast

On white

6.11

#B53128 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B53128 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53128

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53128	#FFFFFF	#000000	##FFFFFF
##B53128	1.00	6.11	3.43	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584F26

Deuteranopia (green-blind)

#796C23

Tritanopia (blue-blind)

#C70030

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b53128;
/* rgb */ color: rgb(181, 49, 40);
/* oklch */ color: oklch(51.6% 0.170 28.5);

Tailwind

colors: {
  custom: {
    50: '#d47363',
    500: '#b53128',
    950: '#000000',
  },
}

SCSS

$custom: #b53128;
$custom-light: #d47363;
$custom-dark: #000000;

JSON

{
  "hex": "#b53128",
  "rgb": {
    "r": 181,
    "g": 49,
    "b": 40
  },
  "hsl": {
    "h": 3.83,
    "s": 63.801,
    "l": 43.333
  },
  "oklch": {
    "l": 0.51572,
    "c": 0.17022,
    "h": 28.5
  },
  "luminance": 0.12174
}

Semantic roles & 50–950 ramp

primary

#B53128

secondary

#70C3C8

accent

#DCE741

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B53128

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

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