Ral 5013 Cobalt Blue

RAL 5013 Cobalt Blue: Deep, dark cobalt navy

RAL 5013 Cobalt Blue is a deep, dark navy with a hint of violet, far darker than artists' cobalt. It is used on doors, facades, machinery, commercial vehicles and corporate schemes. Modelers use it for classic saloons, luxury cars, buses and trucks, and for navy and uniform details on figures and ships. It gains a rich depth under gloss clear and is useful as a shading colour for mid blues. A grey primer supports its tone.

Getting the tone right

Blues, greens and purples change character with the primer underneath and the number of coats. Build the colour in light, even passes over the recommended primer and you get the same tone on every panel.

How to apply

1. Shake the bottle for at least 60 seconds.
2. Prime with a grey primer and let it dry fully.
3. Airbrush straight from the bottle, no thinning needed. Use a 0.2–0.4 mm nozzle at around 20 PSI (1.4 bar) and apply light, cross-hatched coats, letting each one flash off before the next.
4. Let the paint cure overnight before masking or clear-coating.
5. Seal with a water-based clear coat: gloss for a factory shine, or satin or matte for work vehicles and interiors.
6. Clean the airbrush with water before the paint dries.

Why modelers choose Koloi Aqua

• Ready to spray: no guessing thinning ratios, the same result from every bottle
• Cleans up with water, so there are no strong solvent fumes at the bench
• Fine pigment grind for 1:8 to 1:72 scales, so panel lines and detail stay crisp
• One system: primer, colour and clear designed to work together

Shelf life

Estimated shelf life of more than 12 months when stored tightly closed between +10 °C and +28 °C, away from frost and direct sunlight. Shake well before use; if the paint has thickened or separated and does not remix, do not use it.

💡 Need a colour we don’t list? Our colour lab matches RAL, RLM and OEM paint codes on request.

The on-screen image is indicative: the final tone depends on the primer, the number of coats and the clear coat. Keep out of reach of children. Safety Data Sheet available on request.