Medium Blue (70.963)
Model Color
Colour sampled from the official digital swatches: not a physical paint measurement or a manufacturer-certified HEX value. Delta-E matches are approximate and do not guarantee the result on a miniature.
Paint equivalent guide
Ultramar Blue 4 Warhammer acrylic paint equivalents (#436CA1)
Ultramar Blue 4 is a key paint in the Citadel range, valued for its consistent finish and reliable coverage across Warhammer projects.
The closest Ultramar Blue 4 equivalent is Medium Blue (70.963) (Vallejo Model Color) (ΔE 3.1).
For Vallejo, the closest match to Ultramar Blue 4 is Medium Blue (70.963) (Vallejo Model Color) (ΔE 3.1).
For Army Painter, the closest match to Ultramar Blue 4 is Crystal Blue (Army Painter) (ΔE 4.9).
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#436CA1
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Direct answer
Which equivalent should you pick for Ultramar Blue 4?
The closest cross-brand equivalent to Ultramar Blue 4 in the current local catalogue is Caledor Sky from Citadel (Games Workshop) (Delta-E 2.86).
- Closest overall: Caledor Sky (Citadel (Games Workshop), Delta-E 2.86)
- Closest Vallejo: Medium Blue (70.963) (Delta-E 3.15)
- Closest Army Painter: Crystal Blue (Delta-E 4.92)
Method
Matches are computed from the local paint catalogue with Delta-E CIEDE2000. Lower values mean a closer visual match on the miniature.
Limits
Finish, opacity, flow, and bottle format are not captured by Delta-E alone. Test the substitute if the recipe relies on a specific behaviour.
What to check before replacing this base
Before adopting a substitute, check these points specific to this base paint:
- Coverage: reliable — check how many coats are needed for full opacity
- Thinning: controlled thinning — verify the right ratio for your technique
- Recommended primer: the primer already used in your recipe — keep the same surface preparation
- Test swatch: always test the substitute on a spare part first
- Recipe check: compare with the full wash and highlight sequence
Need the paint card for Ultramar Blue 4?
Usage, recipes, primer guidance, and painting context live on the dedicated paint page
Frequently asked questions
Ultramar Blue 4 is a paint from Warhammer. Its specific pigment load, drying behaviour, and finish set it apart from other paints in the same category, which is why a direct substitute needs to match more than just the colour value.
The closest Vallejo option is Medium Blue (70.963) (Delta E 3.15).
Yes, Ultramar Blue 4 is currently part of the Warhammer range. Check local stock or equivalent alternatives if the pot is hard to source.
Check Delta-E, finish type, coverage, opacity, and behaviour over your chosen primer. Run a full test with one shade and one highlight pass before applying the substitute to an entire unit.
Ultramar Blue 4 is a key paint in the Citadel range, valued for its consistent finish and reliable coverage across Warhammer projects.
The closest Ultramar Blue 4 equivalent is Medium Blue (70.963) (Vallejo Model Color) (ΔE 3.1).
For Vallejo, the closest match to Ultramar Blue 4 is Medium Blue (70.963) (Vallejo Model Color) (ΔE 3.1).
For Army Painter, the closest match to Ultramar Blue 4 is Crystal Blue (Army Painter) (ΔE 4.9).
Ultramar Blue 4 is a key paint in the Citadel range, valued for its consistent finish and reliable coverage across Warhammer projects.
The closest Ultramar Blue 4 equivalent is Medium Blue (70.963) (Vallejo Model Color) with Delta E 3.1. For Vallejo, the closest match to Ultramar Blue 4 is Medium Blue (70.963) (Vallejo Model Color) with Delta E 3.1. For Army Painter, the closest match to Ultramar Blue 4 is Crystal Blue (Army Painter) with Delta E 4.9.
Ultramar Blue 4 Vallejo equivalent
The closest Vallejo match is Medium Blue (70.963) (Vallejo Model Color) with Delta E 3.1.
Ultramar Blue 4 Army Painter equivalent
The best Army Painter option is Crystal Blue (Army Painter) with Delta E 4.9.
Ultramar Blue 4 equivalent and alternative: brand comparison
As a paint, Ultramar Blue 4 requires specific handling that affects how any substitute performs. The colour sits in the deep blue range.
Brand comparison
- Closest equivalent : Medium Blue (70.963) (Vallejo Model Color) – ΔE 3.1
- Closest Vallejo option : Medium Blue (70.963) (Vallejo Model Color) – ΔE 3.1
- Closest Army Painter option : Crystal Blue (Army Painter) – ΔE 4.9
A paint substitute only becomes trustworthy once it survives the same primer, shade, and highlight sequence as the original recipe.
Looking at the surrounding palette matters because a near match can still push the finished model warmer, colder, or flatter than expected.
That combination of colour distance, finish, and recipe context is what makes a paint substitute reliable on an actual miniature.
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