BLUE GREEN · CURATED PAINT RECIPE
How to mix petrol blue
A dark, muted cyan-blue for interiors, vehicles, fashion, water, and graphic palettes.
STARTING MIX
4 : 1 : 1 : 0.5
Use one consistent unit for every part. For the smallest fractions, scale the entire recipe up instead of estimating a partial drop.
PIGMENT LOGIC
Why this mixture works
Phthalo blue dominates the hue, green adds the petroleum cyan note, and umber suppresses the jewel-like saturation.
The displayed #275B63 swatch is an sRGB target, not a promise that every brand will dry to the same color. Pigment identity, tint strength, opacity, medium, surface, and lighting remain part of the result.
BASIC-PALETTE ROUTE
Alternative recipe
Mix a blue-heavy teal, then mute it with orange-brown. Keep it darker and bluer than ordinary teal.
Apply the mixture on the same ground and at the same thickness planned for the final work. Label the wet ratio, wait for a complete dry-down, and compare in neutral light before adjusting.
CORRECTION MAP
How to adjust the result
Add blue for inkier petrol, green for deeper teal, or umber for a more industrial shade. White quickly turns it into a softer slate teal.
Correct value first, then hue, then chroma. This order prevents a lightness error from turning into an unnecessarily complicated recipe.
WATCH FOR
Common mistakes
- Making the mixture equal parts blue and green
- Using black before controlling chroma
- Adding too much white and losing the deep character