Thunderous (SW 6201) vs Pewter Green (SW 6208)

Living room with walls painted Sherwin-Williams Thunderous SW 6201 (simulated) — Thunderous SW 6201#6D6C62, LRV 15

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: Thunderous, LRV 15 vs 12.
Warmer: Thunderous, both green-gray (Lab b* 5.7 vs 4.6).
North rooms: Thunderous keeps more brightness (L* 41.5 vs 36.9 in north light); Pewter Green drifts less gray (chroma drop 1.3 vs 3.2).
Trim that works: Spinach White SW 6434, #E4E8DA, LRV 79: the Sherwin-Williams white closest in hue to both.
Closeness: deltaE 4.9, noticeably different. At 4.9, test both: on a full wall the difference will show.

See each color

ThunderousSherwin-Williams, SW 6201LRV 15, #6D6C62

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

More comparisons with Pewter Green

Thunderous (SW 6201) is slightly lighter than Pewter Green (SW 6208) and slightly warmer: LRV 15 vs 12, deltaE 4.9 (noticeably different).

Side by side

Measure	Thunderous	Pewter Green	Gap
Brand	Sherwin-Williams	Sherwin-Williams
Color code	SW 6201	SW 6208
Hex	#6D6C62	#5E6259
RGB	109, 108, 98	94, 98, 89
HSL	55°, 5%, 41%	87°, 5%, 37%
LRV (light reflectance value)	15	12	+3
Lab L*	45.4	41.0	+4.5
Lab a*	-1.6	-3.4	+1.9
Lab b*	5.7	4.6	+1.2
Undertone	Neutral	Neutral
Temperature	warm	neutral
Color family	Gray	Gray

Same paint, two kinds of light

Thunderous (SW 6201), published as #6D6C62

North light (cool, indirect)
#5E6360

South light (warm, direct)
#7D7562

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 Thunderous (SW 6201) for a small room or a north-facing room, because it is 3 LRV points lighter (15 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 Thunderous (SW 6201) 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 Thunderous in other brands

Closest matches to Pewter Green in other brands

Common questions

Is Thunderous the same color as Pewter Green?: They are noticeably different: a CIEDE2000 difference of 4.9. Most people can see the difference between Thunderous and Pewter Green side by side.
Which is lighter, Thunderous or Pewter Green?: Thunderous, with an LRV of 15 against 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.