BIM Technical Standards: MEP Color Mapping
In an effort to achieve consistency across files, the GSA Region 5 has developed color assignments for MEP systems. All project data should conform to these to the extent possible within the authoring application.
Standard
- All MEP files, regardless of software authoring platform, must follow the color coding defined on this page.
- If a data format does not support application of color by element they will be allowed.
- When working in a platform that supports multiple color schemes, such as Revit, only the master, discipline 3D views must have the color scheme.
- When using AutoCAD, the ACI or RGB color number are permitted.
Common Piping and Plumbing Systems
System |
Revit Color |
AutoCAD Color |
RGB |
Compressed Air |
5 |
5 |
0,0,255 |
Storm Drain |
128-000-255 |
190 |
128,0,255 |
Storm Drain Overflow |
219-183-255 |
191 |
219,183,255 |
Domestic Cold Water |
0-63-255 |
160 |
0,63,255 |
Domestic Hot Water Return |
255-170-170 |
11 |
255-170-170 |
Domestic Hot Water Supply |
255-060-060 |
10 |
255,60,60 |
Natural Gas |
2 |
2 |
255,255,0 |
Sanitary |
255-127-0 |
30 |
255,127,0 |
Sanitary Vent |
255-191-0 |
40 |
255,191,0 |
Unknown Pipe |
076-038-038 |
17 |
76,38,38 |
Unknown Pipe is only to be used when it is absolutely necessary. Only when an existing pipe must be shown, but it's contents are unknown, should a pipe be classified as unknown.
HVAC Systems
System |
Revit Color |
AutoCAD Color |
RGB |
Heating Hot Water Return |
255-0-127 |
230 |
255,0,127 |
Heating Hot Water Supply |
255-0-63 |
240 |
255,0,63 |
HVAC - Exhaust |
3 |
83 |
103,165,82 |
HVAC - Outside |
0-191-255 |
140 |
0,191,255 |
HVAC - Return |
0-255-127 |
110 |
0,255,127 |
HVAC - Supply |
000-127-255 |
150 |
0,127,255 |
Condensate - Gravity |
127-255-000 |
70 |
127,255,0 |
Condensate - Pumped |
0-104-78 |
126 |
0,104,78 |
Fire Protection Systems
System |
Revit Color |
AutoCAD Color |
RGB |
Fire Protection - Sprinkler |
1 |
1 |
255,0,0 |
Fire Protection - CO2 |
255-0-191 |
220 |
255,0,191 |
Fire Protection - Halon |
255-170-234 |
221 |
255,170,234 |
Fire Protection - Inert Gas |
189-0-141 |
222 |
189,0,141 |
Steam Systems
System |
Revit Color |
AutoCAD Color |
RGB |
Steam - High Pressure |
0-94-189 |
152 |
0,94,189 |
Steam - Medium Pressure |
126-157-189 |
153 |
126,157,189 |
Steam - Low Pressure |
170-212-255 |
151 |
170,212,255 |
Heating and Cooling Systems
System |
Revit Color |
AutoCAD Color |
RGB |
Chilled Water Return |
191-0-255 |
200 |
191,0,255 |
Chilled Water Supply |
234-170-255 |
201 |
234,170,255 |
Cooling Tower Water Return |
141-0-189 |
202 |
141,0,189 |
Cooling Tower Water Supply |
173-126-189 |
203 |
173,126,189 |
Electrical / Telcom
System |
Revit Color |
AutoCAD Color |
RGB |
Telecommunication |
189-189-126 |
53 |
189,189,126 |
Power Distribution |
189-189-0 |
52 |
189,189,0 |
Lighting |
255-255-170 |
51 |
255,255,170 |
Security |
255-255-0 |
50 |
255,255,0 |
Uncommon / Specialized Systems
System |
Revit Color |
AutoCAD Color |
RGB |
Deionized Water |
165-165-82 |
53 |
165,165,82 |
Dual Temperature Return |
000-063-255 |
160 |
0,63,255 |
Dual Temperature Supply |
191-000-255 |
200 |
191,0,255 |
Energy Recovery |
082-165-165 |
133 |
82,165,165 |
Fuel Gas |
255-127-127 |
11 |
255,127,127 |
Fuel Oil |
082-082-165 |
173 |
82,82,165 |
Fuel Vent |
165-165-82 |
53 |
165,165,82 |
Laboratory Gas |
165-124-82 |
33 |
165,124,82 |
Medical Gas |
165-082-165 |
213 |
165,82,165 |
Nitrogen |
5 |
5 |
0,0,255 |
Non-Potable Water |
165-000-000 |
12 |
165,0,0 |
Potable Water |
000-255-063 |
100 |
0,255,63 |
Propane |
5 |
5 |
0,0,255 |
Refrigerant Liquid |
4 |
4 |
0,255,255 |
Refrigerant Suction |
5 |
5 |
0,0,255 |
Reverse Osmosis Water |
165-000-000 |
12 |
165,0,0 |
Vacuum |
082-165-165 |
133 |
82,165,165 |