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
print Share Icon Last Reviewed 2017-08-13