Color spec
| Brand | C2 Paint |
| Name | Mystery |
| SKU | C2-776 |
| Hex | #646C8C |
| RGB | 100, 108, 140 |
| HSL | 228°, 17%, 47% |
| LRV | 15 |
| Undertone | cool blue tone |
| Family | Gray |
About C2 Paint Mystery
With an LRV of 15, Mystery is a deep, dramatic shade. It soaks up light in north-facing rooms and looks richest where strong daylight hits it. Its blue undertone is the part to watch: it gets picked up by whatever sits next to it, so test it against your trim, floor and the room's main light before committing. Warm artificial light softens it; cool LED can make it look flat, so match your bulbs to the mood you want.
Mystery works best as a feature — a single wall, built-ins, a study or dining room — rather than wrapping a whole bright space. Grays like this read as a modern neutral and sit comfortably alongside both warm woods and cool metals.
Closest matches by brand
10 brands within ΔE 5The closest matches per brand by ΔE2000, computed against each brand's full deck. Only colors within ΔE 5 (close enough to substitute on a wall) are shown — brands with no real match are left off. Tap any swatch for its full single-color spec; tap the brand title to browse all gray from that brand.
Sherwin-Williams
Behr
Benjamin Moore
Valspar
PPG / Glidden
Glidden
Dutch Boy
Dunn-Edwards
Farrow & Ball
Clare
Similar C2 Paint colors
closest in the C2 Paint deckThe nearest shades to Mystery within C2 Paint's own range, ranked by perceptual color distance — useful when you want the same look a touch lighter, darker, or warmer.
Coordinated palette
Generated by hue-rotating #646C8C in HSL space. Pair Mystery with one accent and one neutral — the swatches below are starting points, not final picks.
Accessibility (WCAG contrast)
WCAG 2.1: AA = 4.5:1 normal text · AA Large = 3:1 large text · AAA = 7:1 normal text.
C2 Paint Mystery Equivalents at Other Brands
Matching Mystery from a different paint counter? Below is the single closest color in each major US deck and how close it really is. Remember that any paint store can also custom-tint C2 Paint C2-776 directly — these equivalents are for when you'd rather stay inside one brand's own deck.
Behr Equivalent of Mystery
At Behr, the closest color to Mystery is Plush Velvet (N100-5) — very close at ΔE 3.47, though not an exact twin. It sits at the same lightness (LRV 16 vs 15) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Plush Velvet swatch →
Benjamin Moore Equivalent of Mystery
At Benjamin Moore, the closest color to Mystery is French Violet (1427) — very close at ΔE 2.68, though not an exact twin. It runs slightly lighter (LRV 18 vs 15) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full French Violet swatch →
Valspar Equivalent of Mystery
Valspar's nearest match is Shadow Mountain (8003-48E), visually identical in normal room light (ΔE 1.29). It sits at the same lightness (LRV 15 vs 15) and carries a cool blue undertone, so it substitutes for Mystery without repainting risk. See the full Shadow Mountain swatch →
PPG / Glidden Equivalent of Mystery
PPG / Glidden's nearest match is Grape Haze (PPG1168-6), visually identical in normal room light (ΔE 1.29). It sits at the same lightness (LRV 15 vs 15) and carries a cool blue undertone, so it substitutes for Mystery without repainting risk. See the full Grape Haze swatch →
Glidden Equivalent of Mystery
Glidden's nearest match is Grape Haze (PPG1168-6), visually identical in normal room light (ΔE 1.5). It sits at the same lightness (LRV 15 vs 15) and carries a cool blue undertone, so it substitutes for Mystery without repainting risk. See the full Grape Haze swatch →
Dutch Boy Equivalent of Mystery
At Dutch Boy, the closest color to Mystery is Indigo Dreams (240-6DB) — very close at ΔE 3.13, though not an exact twin. It sits at the same lightness (LRV 16 vs 15) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Indigo Dreams swatch →
Dunn-Edwards Equivalent of Mystery
Dunn-Edwards's nearest match is Champion Blue (DE5915), visually identical in normal room light (ΔE 1.91). It runs slightly darker (LRV 13 vs 15) and carries a cool blue undertone, so it substitutes for Mystery without repainting risk. See the full Champion Blue swatch →
Farrow & Ball Equivalent of Mystery
Farrow & Ball's nearest match is Pitch Blue (NO. 220), visually identical in normal room light (ΔE 1.9). It sits at the same lightness (LRV 15 vs 15) and carries a cool blue undertone, so it substitutes for Mystery without repainting risk. See the full Pitch Blue swatch →
Clare Equivalent of Mystery
At Clare, the closest color to Mystery is Blue'd Up (PNT100-MD-57) — very close at ΔE 3.3, though not an exact twin. It runs slightly darker (LRV 13 vs 15) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Blue'd Up swatch →