TAMXF66 - Tamiya - Flat Light Gray Acrylic - 10mL Bottle

TAMXF66 - Tamiya - Flat Light Gray Acrylic - 10mL Bottle

Tamiya XF-66 Flat Light Gray is designated in Tamiya's original colour guide as "Interior of tanks" — the pale, clean light grey used as the standard interior paint for WWII German, US, British, and Soviet AFV fighting compartments, hull interiors, and ammunition stowage areas. It is a neutral, barely-warm light grey that sits usefully between XF-2 Flat White and XF-53 Neutral Gray, providing a convincing interior grey without the clinical brightness of pure white. Beyond its primary AFV interior application, XF-66 is a critical and frequently used mixing component across a wide range of subjects: RLM 76 Lichtblau formulas, Royal Navy 507C light grey approaches, USAF tactical grey schemes including Ghost Gray (FS 36320), and the full family of modern F-15, F-16, and F/A-18 aircraft grey mixing formulas. It is one of the most-used grey mixing agents in the Tamiya range.

Tamiya Acrylic paints are a hybrid acrylic formula built on water-soluble resin — they can be thinned with water, isopropyl alcohol, or lacquer thinner, and clean up easily with water before curing. When thinned with Tamiya Lacquer Thinner, the paint lays down faster, dries harder, and bonds more aggressively to the substrate. The hybrid resin chemistry means the paint film remains slightly soluble after initial drying — subsequent brush strokes can reactivate and lift the layer below if applied without restraint. For this reason, airbrushing is strongly recommended for large surface coverage. Brush painting is workable for detail and touch-up work, but requires a gentle, deliberate stroke and a fully cured base layer. See our Tamiya Acrylic vs. Enamel vs. Lacquer guide for a full breakdown of paint type differences.

• WWII German AFV interior — the standard pale interior paint applied to fighting compartment walls, ammunition racks, floor plates, and structural framing inside German AFVs; applicable to Tiger I, Tiger II, Panther, Panzer IV, StuG III, and Sd.Kfz.251 half-track interiors; Tamiya designates XF-66 as "Interior of tanks" in the original colour guide and it is called out in Tamiya's 1/35 AFV kit instructions for interior painting across the full German armour range
• US Army AFV interior — a workable approximation for the off-white interior finish of WWII US Army AFVs including the M4 Sherman, M3 Lee, M10 Wolverine, and M7 Priest; US AFV interiors were typically painted a light grey or off-white to maximise visibility; XF-66 provides the pale, clean grey tone appropriate for 1/35 scale fighting compartment interiors before detail painting and weathering are applied
• RLM 76 Lichtblau mixing component — XF-66 contributes to the most widely used Tamiya RLM 76 formula (7 parts XF-2 Flat White + 1 part XF-23 Light Blue + 2 parts XF-66), producing the very pale grey-blue applied to late-war Luftwaffe lower surfaces on Fw 190 D-9, Bf 109 G-10/K-4, and Me 262 from mid-1944 onward; XF-66 provides the slight grey-neutral character that prevents the mix from reading as too blue
• Royal Navy AP 507C Light Grey approach — mixed 4:1 with XF-2 Flat White to produce an approximation of Admiralty Pattern 507C, the standard light grey on Royal Navy warships in the Mediterranean and foreign station roles; pairs with XF-54 Dark Sea Grey for the full range of two-tone Admiralty camouflage schemes
• USAF Ghost Gray FS 36320 mixing — XF-66 is the primary base in the Ghost Gray mix (1 part XF-66 + 1 part XF-54 Dark Sea Grey + 3 parts XF-2 Flat White), the standard Compass Ghost Gray scheme applied to USAF F-15 Eagles of the 1st, 36th, and 57th Fighter Wings, and later to F-16 Fighting Falcons in the two-tone USAF tactical grey scheme of the 1980s–90s
• F-15 Dark Gull Gray FS 36231 mixing — combined with XF-83 Medium Sea Gray and XF-54 Dark Sea Grey (1:1:1 with 3 parts XF-2) for the upper surface Dark Gull Gray on F-15C/D Eagles in the standard two-tone tactical scheme; XF-66 is an essential grey-mixing base for any modern USAF tactical aircraft subject
• Admiralty 507B Medium Grey approximation — straight XF-66 provides a workable starting point for the intermediate grey in Royal Navy camouflage schemes before lightening with XF-2 or darkening with XF-54, covering the mid-tone panels on disruptive schemes applied to Home Fleet destroyers and cruisers throughout WWII
• General light grey utility — scale-effect lightening agent for any grey-family colour; added in small increments to XF-53 Neutral Gray, XF-54 Dark Sea Grey, XF-24 Dark Gray, and XF-63 German Gray to progressively lighten these colours for scale-effect at 1/48, 1/72, and 1/144 scales without introducing the stark brightness of XF-2 Flat White

For full Tamiya paint colour references and modelling compatibility charts, visit our Tamiya Paint Colour Chart — Complete Guide for Scale Modellers.

Thin and airbrush with Tamiya Lacquer Thinner, Mr. Color Thinner, or Mr. Color Leveling Thinner.

• 10ml glass jar
• Part of the Tamiya Acrylic paint range