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Tamiya's X series is the gloss finish reference within the brand's acrylic range. X-4 is a straight blue no intermediate tones that responds well to both brush and airbrush when used with the right thinner. It is one of those paints that any modelling enthusiast ends up keeping on the workbench, not only for its usefulness on vehicle kits, but for its versatility across all kinds of scale projects.
A blue that works well across many modelling contexts
The X designation in Tamiya's nomenclature indicates a gloss finish, which makes X-4 a natural choice for surfaces that call for reflection and colour depth. Applied with a brush, it delivers good results on flat areas or easy-access sections. Thinned with Tamiya X-20A, it flows well through an airbrush for even, controlled coats. When used with Tamiya Lacquer Thinner, the resulting finish is harder and more durable an option some modellers prefer for parts that will be handled frequently.
Compatibility and workbench use
X-4 is compatible with polystyrene, foam, wood and common modelling plastics, making it useful across a wide range of projects: car kits, aircraft, ships, figures or any piece that needs a well-covered gloss blue. The 10 ml bottle is the standard format for Tamiya's Mini range easy to store and comfortable to handle at the workbench. It is one of those references worth having in stock before you actually need it.
The X series as the foundation of a modelling palette
Within Tamiya's acrylic range, the X series covers the most widely used gloss colours in scale modelling. X-4 blue sits naturally alongside other colours in the same series for projects that mix finishes or require high-gloss areas next to matte surfaces. In a display case or diorama, a well-applied gloss blue has a visual presence that satin or matte finishes simply cannot match.