Evergreen Fog (SW 9130) vs Cornwall Slate (SW 9131)

Living room with walls painted Sherwin-Williams Evergreen Fog SW 9130 (simulated) — Evergreen Fog SW 9130#95978A, LRV 30

Living room with walls painted Sherwin-Williams Cornwall Slate SW 9131 (simulated) — Cornwall Slate SW 9131#949488, LRV 29

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

Quick decision

Lighter: Evergreen Fog, LRV 30 vs 29.
Warmer: About the same, both green-gray (Lab b* 6.6 vs 6.4).
North rooms: About the same: both keep their brightness and color about equally (L* 57.9 vs 56.9 in north light).
Trim that works: Spinach White SW 6434, #E4E8DA, LRV 79: the Sherwin-Williams white closest in hue to both.
Closeness: deltaE 1.4, very close. At 1.4, test both side by side if the room is dim or north-facing.

See each color

Evergreen FogSherwin-Williams, SW 9130LRV 30, #95978A

More comparisons with Evergreen Fog

Cornwall SlateSherwin-Williams, SW 9131LRV 29, #949488

Evergreen Fog (SW 9130) is about as light as Cornwall Slate (SW 9131) and about as warm: LRV 30 vs 29, deltaE 1.4 (very close).

Side by side

Measure	Evergreen Fog	Cornwall Slate	Gap
Brand	Sherwin-Williams	Sherwin-Williams
Color code	SW 9130	SW 9131
Hex	#95978A	#949488
RGB	149, 151, 138	148, 148, 136
HSL	69°, 6%, 57%	60°, 5%, 56%
LRV (light reflectance value)	30	29	+1
Lab L*	62.0	61.0	+1.0
Lab a*	-3.2	-2.2	−0.9
Lab b*	6.6	6.4	+0.3
Undertone	Gray-Green	Neutral
Temperature	cool	warm
Color family	Green	Gray

Same paint, two kinds of light

Evergreen Fog (SW 9130), published as #95978A

North light (cool, indirect)
#858D88

South light (warm, direct)
#A6A18A

Cornwall Slate (SW 9131), published as #949488

North light (cool, indirect)
#848A86

South light (warm, direct)
#A59E88

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 Evergreen Fog (SW 9130) for a small room or a north-facing room, because it is 1 LRV points lighter (30 vs 29), so it bounces back more of the limited light

Closest matches to Evergreen Fog in other brands

Closest matches to Cornwall Slate in other brands

Common questions

Is Evergreen Fog the same color as Cornwall Slate?: They are very close: a CIEDE2000 difference of 1.4. Side by side you may see a slight difference between Evergreen Fog and Cornwall Slate.
Which is lighter, Evergreen Fog or Cornwall Slate?: Evergreen Fog, with an LRV of 30 against 29.

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.