The stored digital swatch for Flat Blue is a dark moderate blue with a cool undertone. The catalog suggests Royal Blue as a darker color and Blue Violet as a lighter color to test, both from Vallejo. Marine Blue from Two Thin Coats scores 90 percent against the stored swatch and shares its broad paint-type group. A high digital score does not certify a physical match; compare it with the original after drying.
Flat Blue equivalents in other ranges
1 brand has a same-type candidate scoring at least 88% against Flat Blue's approximate swatch. Compare the listed options and test the paint before substituting.
- Closest Two Thin Coats equivalent: Two Thin Coats Marine Blue, a small digital color distance (delta E 1.9).
- Best The Army Painter option: The Army Painter Gothic Blue, a broader digital color reference (delta E 4.6).
- From Citadel: Citadel Calgar Blue, a larger difference between the stored swatches (delta E 5.7).
- Green Stuff World's closest color: Green Stuff World Ultramar Blue, a broader digital color reference (delta E 6.6).
- Nearest in the P3 Paints catalog: P3 Paints Caspian Blue, a larger difference between the stored swatches (delta E 6.7).
- Best Tamiya option: Tamiya X-3 Royal Blue, a broader digital color reference (delta E 7.3).
In the digital values, Two Thin Coats Marine Blue is slightly warmer. Coat thickness, undercoat and finish can change the physical comparison.
How to read the score
96–100Very close color
88–95Close color
78–87Similar color
0–77Loose color match
Scores compare approximate digital swatches. Test the paint before substituting.
Two Thin Coats
The Army Painter
Citadel
Green Stuff World
P3 Paints
Tamiya
AK Interactive
Monument Pro Acryl
Scale75
Revell
About this color
Color profile
Highlight and shade ladder
Pairs well with
Try any paint in the scheme toolMatch difficulty
Found in 1 other brand with a similar digital color in the same catalog paint-type group.
Possible uses for this color
Frequently asked
What is the closest equivalent to Vallejo Flat Blue?
The leading match in the same broad paint-type group is Two Thin Coats Marine Blue at 90% digital color similarity. Check sheen, medium and coverage before substituting.
Is there a The Army Painter equivalent of Flat Blue?
A The Army Painter candidate to check is Gothic Blue at 77% digital color similarity in the same broad paint-type group. A physical test is still needed.
What color is Flat Blue?
The approximate digital swatch for Flat Blue is a dark moderate blue with a cool undertone (hex #3F4873). It is not a physical paint measurement.
What do I highlight and shade Flat Blue with?
The digital catalog suggests testing Blue Violet for a lighter step and Royal Blue for a darker step, both from Vallejo. These are computed color suggestions, not tested layering recipes.