Comparison

Iron Mountain vs Roman Stone

Behr N520-5 and Vista Paint 8311, ΔE 2.87 apart

Behr Iron Mountain N520-5 on a wall, hex #757574
Iron Mountain Behr N520-5
Vista Paint Roman Stone 8311 on a wall, hex #707775
Roman Stone Vista Paint 8311
Zeytin’s verdict · ΔE 2.87Close cousins. Paint a sample of each before you choose.

Behr Iron Mountain (N520-5) and Vista Paint Roman Stone (8311) measure a delta-E of 2.87 apart. They sit within 1 LRV points of each other, so neither will look brighter than the other on the same wall. Roman Stone holds more color, chroma 3 against 0.6, so it grays out less in dim light. The undertones part company: Iron Mountain reads as a true neutral at hue angle 110.0 degrees, Roman Stone as a green cast at 176.6. Close, but a large sample of each will show the gap, particularly against white trim. If you need the Roman Stone depth in Behr's line, start from its LRV of 17.0 rather than matching by name.

Is Behr Iron Mountain the same color as Vista Paint Roman Stone?

Not quite, but close - Behr Iron Mountain and Vista Paint Roman Stone are delta-E 2.87 apart, close enough that most rooms would not show the difference.

What is the delta-E between Behr Iron Mountain and Vista Paint Roman Stone?

The measured color distance between Behr Iron Mountain and Vista Paint Roman Stone is delta-E 2.87.

Which is lighter, Behr Iron Mountain or Vista Paint Roman Stone?

Behr Iron Mountain is lighter than Vista Paint Roman Stone by 1 points of light reflectance (LRV).

CLOSEST PAIRΔE 2.87 Iron Mountain and Roman Stone
LIGHTESTIron Mountain LRV 18.0
DARKESTRoman Stone LRV 17.0
SPREAD1LRV points

Side by side

measured values
Iron Mountain Roman Stone
Brand Behr Vista Paint
Code N520-5 8311
Hex #757574 #707775
Light reflectance 18.0 17.0
Undertone true neutral green cast
Chroma 0.6 3.0
Hue angle 110.0° 176.6°
Color family gray gray

Each on its own

full detail