#27357E
Citadel

Storm Blue

Foundation (discontinued)

acrylic
blue

Color Information

HEX

#27357E

RGB

39, 53, 126

LAB

25.2, 20.1, -43.2

Closest catalog-color match

Ultramarine by AK Interactive (ΔE 2.8)

Compatibility unverified: application: both products not recorded or recognized; effect: both products not recorded or recognized; finish: both products not recorded or recognized; opacity: both products not recorded or recognized. ΔE 2.8 gives a small catalog color gap. Check product specifications before substituting.

Cross-class catalog match

Blue by Humbrol (ΔE 2.0)

purpose: paint vs varnish. ΔE 2.0 gives a very small catalog color gap. Color-only comparison, not a functional substitute.

Storm Blue catalog data

More from Citadel

Storm Blue by Citadel is cataloged as acrylic, Foundation (discontinued) in the blue color family.

Catalog color data: HEX #27357E, RGB 39/53/126, and CIELAB 25.2/20.1/-43.2. These values describe the listed digital color and can differ from dried paint under real-world lighting.

PaintAtlas lists 18 related catalog colors for this paint. ΔE measures the distance between the listed digital color values only; it does not describe opacity, finish behavior, or how the paint covers a surface. Cross-class matches, such as metallic against conventional paint, are shown as digital color only and are never presented as verified substitutes.

How PaintAtlas computes ΔE and catalog matches

How to choose a paint substitute

Closest catalog colors

Digital color matches

ΔE compares the listed catalog color values only, not finish, opacity, or coverage.

Cross-brand catalog colors

Digital color matches

ΔE compares the listed catalog color values only, not finish, opacity, or coverage.

Technical Color Analysis

Storm Blue is a dark cool vibrant blue with dark value (L*: 25.2). This cool color has saturated saturation (chroma: 47.6), making it ideal for shadows and base layers and perfect for bold, eye-catching areas.

LightnessL* 25.2

Dark

Temperaturecool

cool

SaturationC* 47.6

Saturated

Deep color ideal for shadow areas, recesses, and providing contrast against lighter tones.

Cool color that recedes visually. Creates depth and calm. Excellent for shadows when mixed with warm base tones.

Rich, vivid color with strong presence. Good for focal points and vibrant subjects.

Recommended Undercoats

Black or Dark Grey

Dark colors can use fewer coats over dark primers

Grey

Neutral option if you want slightly easier corrections

Layering & Paint Order Guide

Shadow Paint
70% confidence

Dark value works well for shadow glazes or shading recesses

Suggested Layer Progression

Shadow
Base
Layer
Highlight

This paint works best as a shadow in your layering sequence.

Layering Tips

  • Apply each layer to progressively smaller areas, leaving previous layers visible
  • Maintain consistent light direction across all layers
  • Thin paints for smoother transitions between layers