BLUE

Prussian Blue

#003153

Conversions

HEX#003153

RGBrgb(0, 49, 83)

HSLhsl(205, 100%, 16%)

HSVhsv(205, 100%, 33%)

CMYKcmyk(100%, 41%, 0%, 67%)

Copy CSS

color: #003153;
/* rgb  */ color: rgb(0, 49, 83);
/* hsl  */ color: hsl(205, 100%, 16%);

Contrast

On whitePass · 13.43 : 1

On ink blackFail · 1.43 : 1

Shades

Tints

Pairings

About Prussian Blue

Prussian Blue is the hex color #003153, which translates to rgb(0, 49, 83) in RGB and hsl(205, 100%, 16%) in HSL. On the color wheel it sits at 205 degrees, with a saturation of 100 percent and a lightness of 16 percent. That is deep enough that Prussian Blue reads almost as an ink: it carries detail poorly but anchors a layout well.

How Prussian Blue compares

The closest standard CSS keyword is darkslategray (#2F4F4F), a CIE76 distance of 26.8 away in CIELAB. That is a visible difference, so the keyword is not a substitute here. In the Tailwind CSS 4.3.1 palette the nearest token is sky-950 (#052F4A), at a distance of 4.9. Inside this library the closest neighbour is Charcoal at 19.4. Sorted by lightness, Prussian Blue is number 1 of the 30 blue colors here.

Text on Prussian Blue

2 of the five common text colors below clear WCAG AA for normal text on Prussian Blue, led by White at 13.43:1. The ratios are computed with the WCAG relative luminance formula, the same one the contrast checker uses, which opens with Prussian Blue already loaded as the background.

Contrast of common text colors on Prussian Blue. AA normal text needs 4.5:1, AA large text and non-text elements need 3:1, AAA normal text needs 7:1.
Text color	Ratio	AA normal	AA large	AAA normal
White #FFFFFF	13.43:1	Pass	Pass	Pass
Ink black #0F0F12	1.43:1	Fail	Fail	Fail
Mid grey #6B7280	2.78:1	Fail	Fail	Fail
Dark grey #374151	1.30:1	Fail	Fail	Fail
Light grey #E5E7EB	10.84:1	Pass	Pass	Pass

Building a palette around Prussian Blue

The pairings above give you three classic starting points. The complementary color sits opposite on the wheel and works well as an accent that draws the eye. The analogous colors sit right beside Prussian Blue for calmer, harmonious combinations. The triadic pair spaces three hues evenly for a balanced, energetic palette. Open any swatch to explore it as its own color.

Full values for Prussian Blue

Format	Value
HEX	#003153
RGB	rgb(0, 49, 83)
HSL	hsl(205, 100%, 16%)
HSV	hsv(205, 100%, 33%)
CMYK	cmyk(100%, 41%, 0%, 67%)
OKLCH	oklch(30.35% 0.0779 245.92)
CIELAB	lab(19.31 -0.42 -24.88)

Use Prussian Blue in a tool

Nearby colors

Last updated 5 August 2026 by FusionStudios. Every value on this page is computed by the same functions the tools use. How this is calculated.