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
|
U.S. General Services Administration