Charcoal Blue vs Eco Green
Both from Sherwin-Williams's palette. Charcoal Blue reads as blue-grey, while Eco Green reads as green — two distinct hue families, not close cousins. Eco Green (LRV 32) reflects noticeably more light than Charcoal Blue (LRV 6), a difference of 26 points that becomes especially apparent in rooms with limited natural light. Both lean cool, so they'll behave similarly in mixed or changing light conditions. With a ΔE of 52.5, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 7 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Charcoal Blue vs Eco Green in Real Spaces
7 real rooms side by side. Seeing Charcoal Blue and Eco Green 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
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Eco Green will make the room feel meaningfully brighter than Charcoal Blue would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Eco Green reflects noticeably more light off the walls, making the space read more open than Charcoal Blue.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. Eco Green reflects noticeably more light off the walls, making the space read more open than Charcoal Blue.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Eco Green reflects noticeably more light off the walls, making the space read more open than Charcoal Blue.
Home Office
The test for a home office color isn't how it looks in a quick glance — it's whether it still feels right after a full day of work. Eco Green reflects noticeably more light off the walls, making the space read more open than Charcoal Blue.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Eco Green reflects noticeably more light off the walls, making the space read more open than Charcoal Blue.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Eco Green will make the room feel meaningfully brighter than Charcoal Blue would.
Color Details
Charcoal Blue vs Eco Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Charcoal Blue on one side and Eco Green on the other.
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.
More Charcoal Blue comparisons
See how Charcoal Blue stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 6, White Dove is decisively the brighter choice.
Ammonite reflects far more light (LRV 69 vs 6), opening up a space where Charcoal Blue encloses it.
Their light reflectance is nearly identical (LRV 6 vs 6), so neither reads brighter in a room.
Purbeck Stone reflects far more light (LRV 52 vs 6), opening up a space where Charcoal Blue encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 6), opening up a space where Charcoal Blue encloses it.
At LRV 52 vs 6, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 6), opening up a space where Charcoal Blue encloses it.
At LRV 58 vs 6, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 6, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 6), opening up a space where Charcoal Blue encloses it.
With LRVs of 6 and 4, the two reflect almost the same amount of light.
At LRV 55 vs 6, Tranquil Dawn is decisively the brighter choice.
A 8-point LRV gap (13 vs 6) makes Bancha the marginally brighter of the two.
At LRV 44 vs 6, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 6), opening up a space where Charcoal Blue encloses it.
Artichoke reflects far more light (LRV 21 vs 6), opening up a space where Charcoal Blue encloses it.
At LRV 66 vs 6, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 6, Shoji White is decisively the brighter choice.
At LRV 83 vs 6, Snowbound is decisively the brighter choice.
A 6-point LRV gap (12 vs 6) makes Pewter Green the marginally brighter of the two.
At LRV 68 vs 6, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 6), opening up a space where Charcoal Blue encloses it.
Calamine reflects far more light (LRV 68 vs 6), opening up a space where Charcoal Blue encloses it.
Treron reflects far more light (LRV 25 vs 6), opening up a space where Charcoal Blue encloses it.
A 6-point LRV gap (12 vs 6) makes Vintage Vogue the marginally brighter of the two.
At LRV 45 vs 6, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 6), opening up a space where Charcoal Blue encloses it.
With LRVs of 7 and 6, the two reflect almost the same amount of light.
Cement grey reflects far more light (LRV 24 vs 6), opening up a space where Charcoal Blue encloses it.
Guilford Green reflects far more light (LRV 57 vs 6), opening up a space where Charcoal Blue encloses it.