AC-646 - Blue Metallic Citroen Touch Up Paint

The Look

This shade is pure 1970s sophistication. In 1977, Citroen was pushing boundaries with the aerodynamic CX and the quirky GS, and this blue captured that futuristic spirit perfectly. It is not a loud or neon blue; instead, it is a deep, atmospheric color that gives the bodywork a sense of weight and class. Since your car has likely been on the road for over four decades, the original finish has probably softened or oxidized slightly, so expect this fresh pigment to have a bit more "pop" than the aged panels around it.

Technical Details

This is a true metallic finish, which means it contains tiny flakes designed to catch the light. This creates a beautiful depth, but it also creates a challenge for the person doing the repair. If those flakes do not lay down flat and even, the finish will look "mottled" or cloudy. Because the pigment and the metallic particles have different weights, they tend to separate while sitting on a shelf. Without a thorough mix, you might end up applying a streak of dark blue followed by a patch of silver, which is why your preparation step is the most important part of the process.

Best Practices

On a vintage Citroen from this era, you will usually find your color information stencilled directly onto the metal. Pop the hood and look at the firewall or the suspension tops in the engine compartment for a small circular stamp or a three-letter code. Before you spray or dab Citroen Blue Metallic (check for code AC-646), you need to shake it for at least 60 seconds to wake up those metallic flakes. Always test the color on the included card to ensure the shade matches your current paint's condition. When you begin the repair, keep the container moving in steady passes to prevent the flakes from clumping in one spot. Ensure you are working in a well-ventilated garage or a patch of shade to keep the surface cool while you work.