Persian Blue color code: #1C39BB
A traditional ceramic blue with strong violet undertones.
Persian Blue · rgb(28, 57, 187)
Every format for Persian Blue
- HEX
- #1C39BB
- RGB
- rgb(28, 57, 187)
- HSL
- hsl(229, 74%, 42%)
- HSV
- 229°, 85%, 73%
- CMYK
- 85%, 70%, 0%, 27%
- Lightness
- 42% · mid-tone
Hue sits at 229°, which makes Persian Blue a true blue navy, with 74% saturation. In the Royal Navy family it reads as a mid-tone option.
Text contrast on Persian 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 Persian Blue
The quick brown fox jumps over the lazy dog.
8.93:1 — AAA for normal textBlack text on Persian Blue
The quick brown fox jumps over the lazy dog.
2.35:1 — below AA, decorative use onlyPersian Blue text on white
The quick brown fox jumps over the lazy dog.
8.93:1 — AAA for normal textAccessibility notes
- Pair Persian Blue with white text for the strongest reading experience: that combination gives 8.93:1.
- Used as a text colour on white, it clears the 3:1 bar for large headings.
- Never rely on Persian 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 Persian Blue, add a solid overlay first. Contrast measured against a flat colour does not hold over varying imagery.
Using Persian Blue in CSS and HTML
CSS example
:root {
--persian-blue: #1C39BB;
}
.panel {
background-color: var(--persian-blue);
color: #FFFFFF;
border: 1px solid #1C39BB;
}HTML example
<div style="background-color: #1C39BB; color: #FFFFFF; padding: 1rem;">
Persian Blue #1C39BB
</div>Common uses
- Primary buttons, active navigation states and chart series.
- Royal 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 85%, 70%, 0%, 27%.
- 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(229, 74%, 42%). Keeping hue fixed is what makes a scale look intentional. - Give Persian Blue at least one warm counterweight. A cool palette with no warm accent tends to read as cold rather than calm.
- Saturation is high here, so use it in measured amounts. Large flat areas of a saturated navy can feel heavy on screen.
Complementary and matching colors
Each of these is derived from the hue, saturation and lightness of Persian Blue. Click a swatch to copy it.
Similar navy shades
Continue exploring
FAQs about Persian Blue
What is the Persian Blue color code?
The Persian Blue color code is #1C39BB in HEX, rgb(28, 57, 187) in RGB and hsl(229, 74%, 42%) in HSL.
What is the RGB value of Persian Blue?
Persian Blue is rgb(28, 57, 187), meaning 28 units of red, 57 of green and 187 of blue on the 0 to 255 scale.
What is the CMYK value of Persian Blue?
In CMYK, Persian Blue converts to approximately 85%, 70%, 0%, 27%. Printed output will look slightly less saturated than the screen preview because CMYK covers a narrower gamut.
Does white text work on Persian Blue?
White text on Persian Blue gives a contrast ratio of 8.93:1, which is AAA for normal text.
Does black text work on Persian Blue?
Black text on Persian Blue gives a contrast ratio of 2.35:1, which is below AA, decorative use only.
Which colors go with Persian Blue?
Its direct complement is #E4C94E, and the warm accent #DAE444 works well for calls to action. For a quieter scheme, pair it with the analogous blues listed above.
Is Persian Blue a light or dark navy?
At 42% lightness, Persian Blue is classed as a mid-tone navy in this collection.