#554D4B
Scale75

Petroleum Gray

Scale Color Range

acrylic
grey

Color Information

HEX

#554D4B

RGB

85, 77, 75

LAB

33.5, 2.9, 2.4

Closest catalog-color match

Rlm 61 by AK Interactive (ΔE 1.4)

Compatibility unverified: purpose: candidate not recorded or recognized; chemistry: candidate not recorded or recognized; application: source not recorded or recognized; effect: both products not recorded or recognized; finish: both products not recorded or recognized; opacity: source not recorded or recognized. ΔE 1.4 gives a very small catalog color gap. Check product specifications before substituting.

Petroleum Gray catalog data

More from Scale75

Petroleum Gray by Scale75 is cataloged as acrylic, Scale Color Range in the grey color family.

Catalog color data: HEX #554D4B, RGB 85/77/75, and CIELAB 33.5/2.9/2.4. These values describe the listed digital color and can differ from dried paint under real-world lighting.

PaintAtlas lists 20 related catalog colors for this paint. ΔE measures the distance between the listed digital color values only; it does not describe opacity, finish behavior, or how the paint covers a surface. Cross-class matches, such as metallic against conventional paint, are shown as digital color only and are never presented as verified substitutes.

How PaintAtlas computes ΔE and catalog matches

How to choose a paint substitute

Closest catalog colors

Digital color matches

ΔE compares the listed catalog color values only, not finish, opacity, or coverage.

Cross-brand catalog colors

Digital color matches

ΔE compares the listed catalog color values only, not finish, opacity, or coverage.

Technical Color Analysis

Petroleum Gray is a muted grey with medium-dark value (L*: 33.5). This neutral color has achromatic saturation (chroma: 3.8), making it ideal for shadows and base layers and great for realistic, weathered effects.

LightnessL* 33.5

Medium-Dark

Temperatureneutral

neutral

SaturationC* 3.8

Achromatic

Rich midtone leaning darker. Works well as a base coat color or for shaded areas.

Balanced temperature that works harmoniously with both warm and cool palettes. Versatile for various applications.

Nearly colorless/grey. Perfect for desaturated subjects like stone, ash, or neutral fabrics.

Recommended Undercoats

Grey

Neutral primer works well with medium-toned colors

Zenithal

Pre-establishes highlights and shadows for faster painting

Layering & Paint Order Guide

Shadow Paint
70% confidence

Dark value works well for shadow glazes or shading recesses

Suggested Layer Progression

Shadow
Base
Layer
Highlight

This paint works best as a shadow in your layering sequence.

Layering Tips

  • Apply each layer to progressively smaller areas, leaving previous layers visible
  • Maintain consistent light direction across all layers
  • Thin paints for smoother transitions between layers