Japanese aviation researcher Jim Lansdale has published an exacting and revealing examination of Aichi D3A1 dive bomber casualties at Pearl Harbor at j-aircraft.com including measured Munsell colour values from extant aircraft artifacts.
The Munsell values as listed in the article are rendered above with the closest FS595b comparison value shown beneath each chip together with its DE2000 difference calculation. A calculation of 2.0 or less equals a close match. In two examples where the closest FS equivalents are poor matches I have included a comparison to 16350 but it is not the closest match.
The first two plates show the variegated Munsell values taken from a single artifact together with the calculated average (9th chip). The third plate shows the two Munsell values cited from a visual assessment of a metal fragment from the same aircraft by Robert C Mikesh - the original colour said to lie between the two. The last value is from another metal artifact.
As far as modelling paints go, and without going into complex mixes but allowing for scale effects, here are a few starters:
Vallejo 71023 Camouflage Beige 'Hemp' is already in the ballpark, but may require a little lightening for "scale effect".
Polly Scale F414317 or F110082 'Concrete' are also in the ballpark, but a little lighter and greyer.
An approximate Gunze (GSI Creos) mix would be 50% H70 'RLM02 Grau' and 50% H336 'Hemp'.
For their 1997 1/48th scale D3A1 kit, Hasegawa suggest the following Mr Color mix: 50% #55 'Khaki' + 30% #13 'Neutral Grey' + 10% #4 'Yellow' + 10% #1 'White'
For Humbrol try adding 62 Matt 'Leather' to 40 Gloss 'Pale Grey' in a 2:8 ratio.
White Ensign Models Colourcoats ACJ17 'Nakajima Amber Grey (Ame-iro)' is a little too strong and yellow, whilst ACJ16 'Mitsubishi Grey-Green' is closer but a tad too grey. Somewhere in between these two maybe?
Revell Silk-Matt 362 'Schilfgrün' (Reed Green/RAL 6013) is perhaps a little too green but comes very close to the appearance of the Lovell sample when dry. The green of this Revell colour is subtle and only becomes apparent in juxtaposition to the browner hues.
Greg Springer has also posted a precise Testors Model Master mix for Munsell 2.5 Y 5/3 at j-aircraft.com
Many thanks as always to Ken Glass for providing the fractional Munsell notations and to Jim Lansdale for sharing the data with us.
Image credit: Rendered colour chips © Straggler 2008