Cast Iron (SW 6202) vs Pewter Green (SW 6208)

Living room with walls painted Sherwin-Williams Cast Iron SW 6202 (simulated) — Cast Iron SW 6202#64645A, LRV 12

Living room with walls painted Sherwin-Williams Pewter Green SW 6208 (simulated) — Pewter Green SW 6208#5E6259, LRV 12

Illustrative room. Screen colors vary; test a sample before you paint.

Quick decision

Lighter: About the same: LRV 12 vs 12.
Warmer: Cast Iron, both green-gray (Lab b* 5.7 vs 4.6).
North rooms: Cast Iron keeps more brightness (L* 38.1 vs 36.9 in north light); Pewter Green drifts less gray (chroma drop 1.3 vs 2.9).
Trim that works: Spinach White SW 6434, #E4E8DA, LRV 79: the Sherwin-Williams white closest in hue to both.
Closeness: deltaE 2.4, noticeably different. At 2.4, test both: on a full wall the difference will show.

See each color

Cast IronSherwin-Williams, SW 6202LRV 12, #64645A

Pewter GreenSherwin-Williams, SW 6208LRV 12, #5E6259

More comparisons with Pewter Green

Cast Iron (SW 6202) is about as light as Pewter Green (SW 6208) and slightly warmer: LRV 12 vs 12, deltaE 2.4 (noticeably different).

Side by side

Measure	Cast Iron	Pewter Green	Gap
Brand	Sherwin-Williams	Sherwin-Williams
Color code	SW 6202	SW 6208
Hex	#64645A	#5E6259
RGB	100, 100, 90	94, 98, 89
HSL	60°, 5%, 37%	87°, 5%, 37%
LRV (light reflectance value)	12	12	0
Lab L*	42.1	41.0	+1.1
Lab a*	-2.0	-3.4	+1.4
Lab b*	5.7	4.6	+1.1
Undertone	Neutral	Neutral
Temperature	warm	neutral
Color family	Gray	Gray

Same paint, two kinds of light

Cast Iron (SW 6202), published as #64645A

North light (cool, indirect)
#555B58

South light (warm, direct)
#736D5A

Pewter Green (SW 6208), published as #5E6259

North light (cool, indirect)
#4F5957

South light (warm, direct)
#6D6B59

These swatches and the rooms above are a simulation, not a measurement. How the visualizer works

Which should you pick

Rules of thumb computed from the LRV and Lab values in the table above; no room test was done.

Pick Cast Iron (SW 6202) for a small room or a north-facing room, because it is 0 LRV points lighter (12 vs 12), so it bounces back more of the limited light
Pick Pewter Green (SW 6208) for a south-facing room, because its Lab b* is 4.6 against 5.7, so it is the cooler of the two and offsets warm direct sun
Pick Cast Iron (SW 6202) to warm a north-facing room, because it is the warmer of the two (Lab b* 5.7), which counters cool indirect light

Closest matches to Cast Iron in other brands

Closest matches to Pewter Green in other brands

Common questions

Is Cast Iron the same color as Pewter Green?: They are noticeably different: a CIEDE2000 difference of 2.4. Most people can see the difference between Cast Iron and Pewter Green side by side.
Which is lighter, Cast Iron or Pewter Green?: Neither: both have an LRV of 12.

Full pages

Related comparisons

By Paint Pairs. Color data from manufacturer specifications, via PaintDB. The most-viewed colors are checked against each manufacturer's own color page.

Published 2026-10-01. Updated 2026-10-01.

Sources: LRV and hex as published by the manufacturer, via PaintDB (CC BY 4.0). Color differences are CIEDE2000 values computed by this site from the hex values (data snapshot 2026-10-01). Color names and codes belong to their manufacturers.