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Color conversion
There are two main ways to find a color that is close enough to required one.
The 1st way is using special tables that show relationship between the colors;
there are many web sources with paint-conversion tables. Example of such table you can see below.
The 2nd way is finding alternative color by RGB or CMYK. Every color is a point in 3D RGB space (or in 4D CMYK space).
Finding alternative paints is finding the paints, that are represented by points located near the point that
corresponds to required paint. Click here read more
Example of paint relationship table
| Colour name |
Comment |
FS |
Humbrol |
Tamiya |
Xtracolor |
Polly S |
Revell |
Gunze Sangyo |
Model Master |
| RAL 1002 Sandgelb |
|
FS:10260 |
|
|
|
|
Rev:11 Sand yellow |
|
|
| RAL 1007 Chrome Yellow |
|
FS:33538 |
Hu:188/154 Insignia yellow |
|
|
|
|
|
|
| RAL 1026 |
|
|
Hu:194 |
|
|
|
Rev:312 Fluorescent yellow |
|
|
| RAL 1028 |
|
|
Hu:197 |
|
|
|
Rev:310 Lufthansa yellow |
|
|
| RAL 2004 |
|
|
Hu:18 |
|
|
|
Rev:30 Orange |
|
|
| RAL 2005 Leuchtorange |
|
|
Hu:192 Dayglo orange? |
|
X:X253 |
|
|
|
|
| RAL 3000 |
Bright red |
FS:21105 |
Hu:60(19) |
|
|
|
Rev:330 |
|
|
| RAL 3004 |
|
|
Hu:20/107 |
|
|
|
Rev:331 Crimson |
|
|
| RAL 3022 Salmon pink |
|
|
|
|
|
|
|
|
|
| RAL 3026 |
|
|
Hu:209 |
|
|
|
Rev:332 Fire orange |
|
|
| RAL 5008 Graublau |
|
|
|
|
X:X264 |
|
Rev:351 |
|
|
| RAL 5013 |
|
|
Hu:198 |
|
|
|
Rev:350 Lufthansa blue |
|
|
| RAL 5014 Pigeon blue |
|
FS:35488 |
Hu:157 |
|
|
|
|
|
|
| RAL 6003 Olivegrun |
|
FS:34102 |
Hu:86 |
|
X:X261 |
|
Rev:361 |
|
|
| RAL 6014 Gelboliv |
|
FS:24064 |
Hu:155 |
|
X:X251 |
|
|
|
|
| RAL 6020 Chrome green |
|
FS:34079 |
Hu:116(195) |
|
|
|
Rev:363 Dark Green |
|
|
| RAL 7000 Squirrel grey |
|
FS:35237 |
Hu:145 |
|
|
|
Rev:57 Medium Grey |
|
|
| RAL 7001 Silbergrau |
|
FS:36375 |
Hu:64/127 |
|
X:X255 |
|
Rev:374 |
|
|
| RAL 7005 Mouse grey |
|
|
Hu:140 |
|
|
|
Rev:47 |
|
|
| RAL 7009 Grungrau |
|
|
Hu:(116)91 |
|
X:X256 |
|
Rev:67 |
|
|
| RAL 7011 Iron grey |
|
FS:36118 |
Hu:125 |
|
|
|
|
|
|
| RAL 7012 Basaltgrau |
|
FS:26152 |
Hu:(27)79 |
|
X:X254 |
|
Rev:77 |
|
|
| RAL 7013 Brown grey |
|
|
Hu:98 |
|
|
|
Rev:46 |
|
|
| RAL 7021 Schwartzgrun |
|
|
|
|
X:X262 |
|
Rev:9 |
|
|
| RAL 7023 Dunkelgrau |
|
|
Hu:141 Concrete grey |
|
X:X263 |
|
|
|
|
| RAL 7030 Steingrau |
|
|
|
|
X:X257 |
|
Rev:75(162) |
|
|
| RAL 7031 |
|
|
Hu:27 |
|
|
|
Rev:79 Sea Grey |
|
|
| RAL 7032 Pebble grey |
|
FS:36408 |
|
|
|
|
Rev:70 |
|
|
| RAL 7035 Lichtgrau |
|
FS:35630 |
Hu:196 |
|
X:X260 |
|
Rev:371 |
|
|
| RAL 7037 Staubraun |
|
|
Hu:106 |
|
X:X258 |
|
|
|
|
| RAL 7038 Agate grey |
|
|
Hu:183 |
|
|
|
Rev:372 |
|
|
| RAL 7039 Qaurzgrau |
|
|
Hu:92 |
|
X:X259 |
|
|
|
|
| RAL 7042 Traffic grey A |
|
FS:36270 |
Hu:167 |
|
|
|
|
|
|
| RAL 8017 |
Brown |
|
Hu:10 |
|
|
|
|
|
|
| RAL 8023 |
Leather brown |
|
Hu:62 |
|
|
|
Rev:85 |
|
|
| RAL 9001 Cream |
|
FS:37886 |
Hu:34 |
|
X:X252 |
|
Rev:5 |
|
|
| RAL 9005 Jet black |
|
FS:37038 |
Hu:21/85 |
|
|
|
Rev:7 |
|
|
| RAL 9006 White aluminium |
|
FS:17178 |
Hu:56 |
|
|
|
|
|
|
| RAL 9010 |
|
|
Hu:22/130 |
|
|
|
Rev:4 White (gloss?) |
|
|
| RAL 9011 |
|
|
Hu:33 |
|
|
|
Rev:8 Black (matt?) |
|
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Finding similar paints in "Color Space"
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Every color can be represented by corresponding point in "colorspace";
if the distance between two "color points" is small enough the colors seem similar.
PaintAssistant program uses this
way to find paints that are similar to required one. The porgram calculates "distances"
between each color in the database and the color we're looking for; then program selects the
"top colors" trying to minimize these "distances"; thus if even there isn't
absolutelly identical alternative paint, the program returns the colors that are close
enough to required paint or standard.
One more strong side of this method: we can find similar coloirs also for mixts of
the paints and take in account scale lighting.
If the ideal solution can not be found the method helps to find the optimal one. The program shows
"percentage of similarity" for each found color; 100% means that required and alternative colors are identical.
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