No shortage of substitutes here, Thousand Sons Blue from Citadel matches at 87 percent and 4 brands carry a strong same-finish near-match. Sea Blue is a dark vivid blue with a cool undertone. Within the Humbrol range it ladders cleanly, Tarmac for the shadows and WW1 Blue for the highlights. Bottom line: run out mid-project and another brand will get you within a shade.
Cross-brand results
Closest equivalents
The closest cross-brand match is Citadel Thousand Sons Blue at 87% similarity. Same-finish paints rank before color-only matches.
How to read the score
90+Close
80sUsable
<70Mix
Citadel
The Army Painter
Revell
Scale75
Vallejo
P3 Paints
Monument Pro Acryl
AK Interactive
Green Stuff World
Two Thin Coats
Tamiya
About this color
Color profile
Familyblue
Lightnessdark
Saturationvivid
Undertonecool
Highlight and shade ladder
Pairs well with
Try any paint in the scheme toolMatch difficulty
Common color
Closest cross-brand match
Found in 4 other brands with a same-finish match.
Where painters use it
armor, robes, focal pointsarmor, robes and cloth
Frequently asked
What is the closest equivalent to Humbrol Sea Blue?
The closest same-finish match is Citadel Thousand Sons Blue at 87% color similarity.
What color is Sea Blue?
Sea Blue is a dark vivid blue with a cool undertone (hex #004B6E).
Same range
Full range