Mysterious
What Mysterious Actually Looks Like
Mysterious is a very dark blue-gray, sitting at the shadowy end of the color spectrum. It reads as a near-charcoal in most interior conditions, with enough blue to keep it from feeling flat or simply dark. In strong daylight it opens up slightly and the blue-gray character becomes more legible. In dim or artificial light it pulls close to black.
Mysterious Undertones
The color carries a quiet blue undertone beneath its gray base. That blue is cool and slightly steely rather than navy or ink-toned. In warm incandescent light the blue softens and the gray dominates. Under daylight or LED lighting the cool blue comes forward more clearly.
Where Mysterious Works Best
Mysterious works well as a full room enveloping color in spaces where you want drama and enclosure, think a home office, a library, a dining room, or a primary bedroom. It also works as a single accent wall where the rest of the room stays light. Because the LRV is very low, it absorbs a lot of light, so it suits rooms where you are not dependent on paint reflectance to brighten the space.
Where to put Mysterious
A dark, enveloping wall color like this one reduces visual distraction and gives a focused, contained feeling. Keep the desk surface and shelving light so the room does not feel oppressive.
Mysterious is well suited to dining rooms used primarily in the evening. Candlelight and warm pendant lighting soften the blue and give the walls a rich, atmospheric quality that flatters both food and faces.
Used on all four walls it creates a cocoon-like atmosphere. Balance it with warm bedding and light-toned trim so the room still feels welcoming rather than cave-like.
Small spaces with no natural light are actually good candidates for a color this dark. Lean into the drama with a statement mirror and warm sconce lighting.
What to Pair With Mysterious
No coordinating colors are listed in our database for this color, but because Mysterious is a deep cool blue-gray, it pairs naturally with crisp whites, warm off-whites, natural wood tones, brass or unlacquered bronze hardware, and soft warm linens that keep the contrast from feeling harsh.
You Might Also Like
Colors that clash with Mysterious
Pairing Mysterious with a trim color that also reads cool and mid-toned removes the contrast the color needs and makes the whole room feel flat and heavy.
Under harsh cool-white fluorescent bulbs the blue undertone can shift toward a cold, slightly institutional quality and the color loses its depth.
In a fully enclosed room with zero daylight, a color with an LRV this low can feel airless and claustrophobic rather than atmospheric.
Common questions
The Benjamin Moore color code is AF-565. The precise LRV is 8.76, which places it firmly in the very dark range. The hex and RGB values render in the color spec block on this page.
In low light it reads very close to black. In good daylight, especially near a window, the blue-gray character comes through and it clearly reads as a dark blue-gray rather than a pure black.
Eggshell is a solid choice for most wall applications. It gives just enough sheen to keep the color from looking chalky while hiding minor surface imperfections. Matte works if you want maximum depth and zero light bounce. Avoid flat in high-traffic areas.
It is available in both interior and exterior formulas. On exteriors it tends to read as a very dark slate or near-charcoal. It works well on shutters, front doors, and accent trim where you want a bold, grounded statement.
Potentially, yes. Because the LRV is under 9 the color absorbs a significant amount of light. In a small room with good natural light and light-colored trim and furnishings it can still work beautifully. In a small room with no windows it is a harder sell unless you are treating only one wall.