#180428#180428

#180428 is a very dark, moderate violet. Relative luminance 0.004; OKLCH L 17.2% C 0.072 H 306.2°. Best body text is #FFFFFF at 19.32:1 contrast (WCAG AA passes).

Color values

HEX	#180428
RGB	rgb(24, 4, 40)
HSL	hsl(273, 82%, 9%)
HSV	hsv(273, 90%, 16%)
CMYK	cmyk(40%, 90%, 0%, 84.3%)
CIE-LAB	lab(3.92, 15.99, -18.85)
CIE-LCH	lch(3.92, 24.71, 310.31°)
OKLab	oklab(17.22% 0.0428 -0.0585)
OKLCH	oklch(17.22% 0.072 306.2)
XYZ	xyz(0.8030, 0.4342, 2.0486)
Luminance	0.0043 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180428 #142804

analogous

#060428 #180428 #280426

triadic

#180428 #281804 #042818

tetradic

#180428 #280604 #142804 #042628

square

#180428 #280604 #142804 #042628

split-complementary

#180428 #262804 #042806

monochromatic

#11031C #11031C #180428 #390A60 #5B0F97

Accessibility & contrast

On white

19.32

#180428 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#180428 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180428

19.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180428	#FFFFFF	#000000	##FFFFFF
##180428	1.00	19.32	1.09	19.32
#FFFFFF	19.32	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D29

Deuteranopia (green-blind)

#000E27

Tritanopia (blue-blind)

#150C15

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #180428;
/* rgb */ color: rgb(24, 4, 40);
/* oklch */ color: oklch(17.2% 0.072 306.2);

Tailwind

colors: {
  custom: {
    50: '#554862',
    500: '#180428',
    950: '#000000',
  },
}

SCSS

$custom: #180428;
$custom-light: #554862;
$custom-dark: #000000;

JSON

{
  "hex": "#180428",
  "rgb": {
    "r": 24,
    "g": 4,
    "b": 40
  },
  "hsl": {
    "h": 273.333,
    "s": 81.818,
    "l": 8.627
  },
  "oklch": {
    "l": 0.17225,
    "c": 0.07249,
    "h": 306.2
  },
  "luminance": 0.00434
}

Semantic roles & 50–950 ramp

primary

#180428

secondary

#406B1D

accent

#F83089

background

#F5F4F5

surface

#E9E6EA

border

#C5C2C6

text

#030005

muted

#787779

Preview Lab

Preview with #180428

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

Preview Lab → · Contrast checker → · Palette generator →