#858F91
AMMO by Mig

Medium Sea Grey (bs 637)

Acrylics

acrylic
grey

Color Information

HEX

#858F91

RGB

133, 143, 145

LAB

58.7, -3.2, -2.3

Product Code

AMIG0246

Closest catalog-color match

Ironbreaker by Citadel (ΔE 1.3)

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 1.3 gives a very small catalog color gap. Check product specifications before substituting.

Cross-class catalog match

Grey (USAF) by Revell (ΔE 1.1)

purpose: paint vs varnish. ΔE 1.1 gives a very small catalog color gap. Color-only comparison, not a functional substitute.

Medium Sea Grey (bs 637) catalog data

More from AMMO by Mig

Medium Sea Grey (bs 637) by AMMO by Mig (product code AMIG0246) is cataloged as acrylic, Acrylics in the grey color family.

Catalog color data: HEX #858F91, RGB 133/143/145, and CIELAB 58.7/-3.2/-2.3. These values describe the listed digital color and can differ from dried paint under real-world lighting.

PaintAtlas lists 18 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

Cross-brand catalog colors

Digital color matches

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

Technical Color Analysis

Medium Sea Grey (bs 637) is a muted grey with medium-light value (L*: 58.7). This neutral color has achromatic saturation (chroma: 3.9), making it excellent for highlights and focal points and great for realistic, weathered effects.

LightnessL* 58.7

Medium-Light

Temperatureneutral

neutral

SaturationC* 3.9

Achromatic

Lighter midtone excellent for first highlights or as a lighter base coat option.

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

Layer Paint
70% confidence

Medium-light value works as an intermediate layer between base and highlight

Suggested Layer Progression

Shadow
Base
Layer
Highlight

This paint works best as a layer 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