Blue Grotto vs Endless Sea paint color comparison

Blue Grotto vs Endless Sea

Both are Sherwin-Williams colors. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. At LRV 9 vs NaN, Endless Sea will read as the brighter of the two — a NaN-point gap that matters most in north-facing or low-light rooms. They share a cool quality — useful to know if you're layering them in the same space. At ΔE 10.2, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.

Blue Grotto vs Endless Sea in Real Spaces

4 real rooms side by side. Seeing Blue Grotto and Endless Sea in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.

Living Room

Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.

Blue GrottoA cozy living room painted in Blue Grotto

@mybudgetrecipes

Endless SeaEndless Sea Living Room

@sda_paint

Bedroom

Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.

Blue GrottoA industrial bedroom painted in Blue Grotto

@mybudgetrecipes

Endless SeaSherwin Williams Endless Sea Bedroom

@aglae_conception

House

At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.

Blue GrottoBlue Grotto color — coastal house inspiration

@mybudgetrecipes

Endless SeaSherwin Williams Endless Sea Exterior

@jilligan74

Front Door

Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.

Blue Grottorustic modern front door featuring Blue Grotto by Sherwin-Williams

@mybudgetrecipes

Endless SeaEndless Sea Front Door

@certaproboston

Color Details

Blue Grotto
Sherwin-Williams · 2941
LRVNaN
BrandSherwin-Williams
Number2941
Undertone—
TemperatureCool
BrightnessDark
Endless Sea
Sherwin-Williams · 9150
LRV8.7
BrandSherwin-Williams
Number9150
Undertone—
TemperatureCool
BrightnessDark

Blue Grotto vs Endless Sea Simulated Comparison

5 simulated room previews — drag the slider on each to see Blue Grotto on one side and Endless Sea on the other.

Bathroom
Bedroom
House
Kitchen Cabinets
Living Room

Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.