Mopboard Black
What Mopboard Black Actually Looks Like
Mopboard Black is about as dark as paint gets without being a true flat black. At first glance it reads as a straightforward charcoal black, but sit with it across different times of day and it starts to move. The gray content keeps it from being absolute, and that ambiguity is exactly what makes it tricky to commit to from a fan deck chip.
Mopboard Black Undertones
This is one of those colors that genuinely vacillates. It can lean warm in certain light and cool in others, and the gray in its base makes it hard to pin down either way. A chip on a fan deck tells you almost nothing useful here. A large painted sample board viewed at different times of day, in your actual room, is the only reliable way to assess how it will behave. In a room with shade trees outside and cooler ambient light, it can pull noticeably cool. In warmer light it softens and reads less stark.
Where Mopboard Black Works Best
As a color from the Williamsburg collection, Mopboard Black suits spaces where historical weight and depth are intentional choices. Think trim, millwork, accent walls, and built-ins where a near-black anchors the room without calling attention to its undertone complexity. It works best in rooms where you control the light, because natural cool light from north or shaded exposures will shift it in ways you may not have anticipated from the sample stage.
Where to put Mopboard Black
Painting trim, baseboards, or door surrounds in Mopboard Black creates strong graphic contrast without the harshness of a flat blue-black. The undertone movement is less noticeable on narrow millwork surfaces than on large walls, which actually makes this a more predictable choice for trim than for full room applications.
A single accent wall or a run of built-in shelving in Mopboard Black anchors a room with real visual weight. In rooms with warm incandescent or amber lighting, the color feels grounded and rich. In rooms with cooler daylight from north-facing or shaded windows, expect it to read crisper and more gray-black.
In a home office where you control the lighting with fixtures rather than relying on natural light, Mopboard Black can create a focused, contained atmosphere. Plan your artificial light source and color temperature before committing, since this color is more reactive to light conditions than many near-blacks.
What to Pair With Mopboard Black
No coordinating colors are specified in this color's palette, so you have full flexibility to build your own scheme. Because the undertone shifts between warm and cool, the safest pairings are neutrals with a clear identity, creamy warm whites to play up any warmth, or crisp cool whites to lean into the cooler side. Avoid colors with competing ambiguous undertones or you risk a pairing that looks muddy rather than intentional.
Colors that clash with Mopboard Black
In cooler light, Mopboard Black pulls toward a gray-cool cast. Pair it with warm brown wood tones or amber-heavy furnishings in that same light and the contrast can feel disconnected rather than complementary.
Small chip samples of very dark colors are notoriously unreliable, and Mopboard Black is a documented example of that problem. A color that looks one way on a chip can behave quite differently once it covers a full wall and interacts with your room's reflected light.
At an LRV this low, Mopboard Black absorbs a significant amount of light. In an already dim room with limited windows or artificial light, it can make the space feel smaller and heavier than intended.
Common questions
It is part of Benjamin Moore's Williamsburg collection, a palette of historically referenced colors developed in partnership with Colonial Williamsburg.
The code is CW-680, the hex is #373839, and the LRV is 6.16. That LRV puts it firmly in near-black territory, meaning it absorbs the great majority of light in a room.
It is available in multiple finishes. For trim and millwork, a semi-gloss or satin will hold up better and allow easier cleaning. For walls or accent applications, an eggshell or matte finish reduces reflectivity, which can help stabilize the visual weight and minimize the shifting undertone effect in varied light.
That depends heavily on your room. The gray content in this color makes the undertone genuinely ambiguous, and it has been observed reading warm in some settings and cool in others, particularly in rooms with shade trees or north-facing light where it pulls cooler. Sample it in your specific space to find out which direction it leans for you.