#851728#851728

#851728 is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.4% C 0.143 H 18.9°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#851728
RGB	rgb(133, 23, 40)
HSL	hsl(351, 71%, 31%)
HSV	hsv(351, 83%, 52%)
CMYK	cmyk(0%, 82.7%, 69.9%, 47.8%)
CIE-LAB	lab(28.78, 45.83, 19.83)
CIE-LCH	lch(28.78, 49.94, 23.39°)
OKLab	oklab(40.4% 0.1357 0.0466)
OKLCH	oklch(40.4% 0.143 18.9)
XYZ	xyz(10.3634, 5.7542, 2.5721)
Luminance	0.0575 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#851728 #178574

analogous

#85175F #851728 #853D17

triadic

#851728 #288517 #172885

tetradic

#851728 #5F8517 #178574 #3D1785

square

#851728 #5F8517 #178574 #3D1785

split-complementary

#851728 #17853D #175F85

monochromatic

#1D0509 #510E18 #851728 #B92038 #DD3A53

Accessibility & contrast

On white

9.76

#851728 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#851728 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #851728

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##851728	#FFFFFF	#000000	##FFFFFF
##851728	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393528

Deuteranopia (green-blind)

#544C25

Tritanopia (blue-blind)

#93001F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #851728;
/* rgb */ color: rgb(133, 23, 40);
/* oklch */ color: oklch(40.4% 0.143 18.9);

Tailwind

colors: {
  custom: {
    50: '#b06161',
    500: '#851728',
    950: '#000000',
  },
}

SCSS

$custom: #851728;
$custom-light: #b06161;
$custom-dark: #000000;

JSON

{
  "hex": "#851728",
  "rgb": {
    "r": 133,
    "g": 23,
    "b": 40
  },
  "hsl": {
    "h": 350.727,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.40397,
    "c": 0.14347,
    "h": 18.9
  },
  "luminance": 0.05753
}

Semantic roles & 50–950 ramp

primary

#851728

secondary

#3FB9A6

accent

#EDD23B

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120505

muted

#817A79

Preview Lab

Preview with #851728

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

Preview Lab → · Contrast checker → · Palette generator →