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Midnight Slate

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Color codes

HEX
RGB
HSL
HSV
CMYK (approximate)
CIELAB
CSS
Relative luminance0.0088
Blue Web & UI ColorsNeutral ColorsCool Colors Cool

Shades of Midnight Slate

All shades

Lighter

Darker

Tints mixed with white

Tones mixed with gray

Color harmonies

Complementary

Opposite on the wheel (180°): maximum contrast for accents.

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Analogous

Neighbors 30° apart: calm and natural.

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Triadic

Three hues 120° apart: vibrant yet balanced.

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Split-complementary

The base plus the two neighbors of its complement: contrast with less tension.

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Tetradic

Four hues 90° apart: rich, best with one dominant color.

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Monochromatic

One hue in several lightness levels: elegant and consistent.

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Contrast and readability

White text17.85:1
✓ AA✓ AAA✓ AA Large
Black text1.18:1
✗ AA✗ AAA✗ AA Large
On white17.85:1
✓ AA✓ AAA✓ AA Large
On black1.06:1
✗ AA✗ AAA✗ AA Large

Text colors that pass AA

Check in the contrast checker

In a design

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A short paragraph shows how body text sits next to the color.

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New

Cards and badges use a soft tint of the color. Read more

Plan your next project

A short paragraph shows how body text sits next to the color.

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New

Cards and badges use a soft tint of the color.

Midnight Slate

Full-color background with readable text.

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About Midnight Slate

Midnight Slate (#0F172A) is a very dark, moderately saturated color from the Blue family with a cool character. It is made of 15 red, 23 green and 42 blue (hsl(222, 47%, 11%)). Its contrast ratio is 17.85:1 against white and 1.18:1 against black, so white text reads best on it.

Suggested uses

  • text and headings
  • dark mode surfaces and elegant accents
  • calm, trustworthy or technical themes

Reading the codes

In HEX, #0F172A stores red, green and blue as pairs of base-16 digits: 15, 23 and 42 out of 255. In HSL the same color has a hue of 222°, 47% saturation and 11% lightness, which makes lighter or darker variants easy to create by changing only the lightness.

Similar colors

#1B2A4ANavy Ink#002147Oxford Blue#1B1B1FInk Black#010B13Rich Black#121212Dark Mode Gray#003153Prussian Blue#1F305ERoyal Navy#0A0A0AJet Black#222222Soft Black#000000Black

Palettes with this color

SaaS Dashboard#0F172A #1E293B #6366F1 #10B981 #F8FAFCProduct Launch#111827 #4F46E5 #22D3EE #F9FAFB #F43F5EClean Blog#FFFFFF #F3F4F6 #374151 #111827 #2563EBDenim Days#F1F1EE #C8D3E0 #6C8EBF #2F4F7F #1A2238

Tools for this color

Shades GeneratorGenerate tints, tones, lighter and darker shades and saturation variations.Contrast CheckerAccurate WCAG contrast ratio with AA/AAA results and accessible suggestions.Color Harmony GeneratorComplementary, analogous, triadic, tetradic, split-complementary and monochromatic harmonies.Color Blindness SimulatorApproximate protanopia, deuteranopia, tritanopia and achromatopsia simulations.

Frequently asked questions

What is the HEX code of Midnight Slate?
The HEX code of Midnight Slate is #0F172A. In RGB it is rgb(15, 23, 42) and in HSL hsl(222, 47%, 11%).
Which text color works on Midnight Slate?
White text has a contrast ratio of 17.85:1 on Midnight Slate and black text 1.18:1, so white text is more readable. WCAG AA needs at least 4.5:1 for normal text.
What is the complementary color of Midnight Slate?
Rotating the hue of Midnight Slate by 180° gives #2A220F, its complementary color on the RGB color wheel.
What is Midnight Slate in CMYK?
An approximate CMYK value for Midnight Slate is cmyk(64%, 45%, 0%, 84%). For printing, ask your printer for an ICC-profiled conversion.