Obsidian Blue color code: #10182B
A dark neutral navy with low saturation, forgiving on OLED screens and easy to layer.
Obsidian Blue · rgb(16, 24, 43)
Every format for Obsidian Blue
- HEX
- #10182B
- RGB
- rgb(16, 24, 43)
- HSL
- hsl(222, 46%, 12%)
- HSV
- 222°, 63%, 17%
- CMYK
- 63%, 44%, 0%, 83%
- Lightness
- 12% · dark
Hue sits at 222°, which makes Obsidian Blue a true blue navy, with 46% saturation. In the Midnight Navy family it reads as a dark option.
Text contrast on Obsidian Blue
Contrast ratios are calculated using the WCAG 2.1 relative luminance formula. Normal body text needs 4.5:1 and large text needs 3:1 to pass AA.
White text on Obsidian Blue
The quick brown fox jumps over the lazy dog.
17.68:1 — AAA for normal textBlack text on Obsidian Blue
The quick brown fox jumps over the lazy dog.
1.19:1 — below AA, decorative use onlyObsidian Blue text on white
The quick brown fox jumps over the lazy dog.
17.68:1 — AAA for normal textAccessibility notes
- Pair Obsidian Blue with white text for the strongest reading experience: that combination gives 17.68:1.
- Used as a text colour on white, it clears the 3:1 bar for large headings.
- Never rely on Obsidian Blue alone to communicate state. Add an icon, label or underline so the meaning survives for colour-blind users and in greyscale printing.
- When placing text over a photograph tinted with Obsidian Blue, add a solid overlay first. Contrast measured against a flat colour does not hold over varying imagery.
Using Obsidian Blue in CSS and HTML
CSS example
:root {
--obsidian-blue: #10182B;
}
.panel {
background-color: var(--obsidian-blue);
color: #FFFFFF;
border: 1px solid #10182B;
}HTML example
<div style="background-color: #10182B; color: #FFFFFF; padding: 1rem;">
Obsidian Blue #10182B
</div>Common uses
- Page and section backgrounds in dark interfaces, where it holds white text cleanly.
- Midnight Navy palettes for brand systems that need a dependable cool anchor.
- Print work where a deep blue is preferred to black, using the CMYK build 63%, 44%, 0%, 83%.
- Data visualisation, as one step in a lightness-based navy scale.
Design recommendations
- Build lighter and darker variants by changing only the lightness in
hsl(222, 46%, 12%). Keeping hue fixed is what makes a scale look intentional. - Give Obsidian Blue at least one warm counterweight. A cool palette with no warm accent tends to read as cold rather than calm.
- Saturation is moderate, which makes this shade forgiving across large areas and long reading sessions.
Complementary and matching colors
Each of these is derived from the hue, saturation and lightness of Obsidian Blue. Click a swatch to copy it.
Similar navy shades
Continue exploring
FAQs about Obsidian Blue
What is the Obsidian Blue color code?
The Obsidian Blue color code is #10182B in HEX, rgb(16, 24, 43) in RGB and hsl(222, 46%, 12%) in HSL.
What is the RGB value of Obsidian Blue?
Obsidian Blue is rgb(16, 24, 43), meaning 16 units of red, 24 of green and 43 of blue on the 0 to 255 scale.
What is the CMYK value of Obsidian Blue?
In CMYK, Obsidian Blue converts to approximately 63%, 44%, 0%, 83%. Printed output will look slightly less saturated than the screen preview because CMYK covers a narrower gamut.
Does white text work on Obsidian Blue?
White text on Obsidian Blue gives a contrast ratio of 17.68:1, which is AAA for normal text.
Does black text work on Obsidian Blue?
Black text on Obsidian Blue gives a contrast ratio of 1.19:1, which is below AA, decorative use only.
Which colors go with Obsidian Blue?
Its direct complement is #826A30, and the warm accent #A19A21 works well for calls to action. For a quieter scheme, pair it with the analogous blues listed above.
Is Obsidian Blue a light or dark navy?
At 12% lightness, Obsidian Blue is classed as a dark navy in this collection.