Waterloo
What Waterloo Actually Looks Like
Waterloo is a confident, medium-depth blue. It reads as a classic cornflower to sky blue in good light, neither too pale nor too saturated. The RGB balance puts blue firmly in charge, with enough green in the mix to keep it from feeling cold or stark. It lands in that range of blue that most people would simply call blue, without needing a modifier like icy or navy.
Waterloo Undertones
The color facts give no editorial undertone designation, and without independent real-world research to draw from, specifics about how Waterloo shifts in particular light conditions are not something to state with confidence. What the RGB values show clearly is that green is the secondary component. That green presence tends to keep a blue from reading purely cool or violet-leaning, but the degree to which you notice it will depend on your light source, your other surfaces, and the finish you choose.
Where Waterloo Works Best
Because Waterloo has a moderate LRV, it absorbs a fair amount of light. Rooms with good natural light will carry it comfortably. In rooms with limited light, it will read noticeably deeper and more enveloping. It is available for interior use only per the color facts.
Where to put Waterloo
At this depth, Waterloo can make a living room feel settled and calm rather than airy. It works especially well on a single focal wall if you want the blue presence without committing to four walls of medium-depth color.
Blue in this tonal range is a practical bedroom choice. It is deep enough to feel cozy in the evening and clear enough that it does not feel gloomy during the day if the room gets decent light.
A focused, mid-depth blue like Waterloo can help define a workspace without the heaviness of a dark navy. Keep trim light to maintain contrast and stop the room from feeling closed in.
Dining rooms often handle deeper colors well because they are used primarily in the evening under artificial light. Waterloo at that depth and in that light will read rich and immersive, which suits a dining room that gets regular use at night.
What to Pair With Waterloo
No coordinating colors are listed in our database for Waterloo CSP-555 at this time. As a general principle, a blue of this depth pairs well with warm whites on trim, natural wood tones, and neutral grays or greiges on adjacent walls, but specific Benjamin Moore color names are not cited here since none appear on the coordinating list.
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Colors that clash with Waterloo
Red-orange tones sit directly across the color wheel from a blue-green leaning blue. In small doses that contrast can be energetic, but strong warm reds or burnt oranges in furniture or rugs can fight with Waterloo rather than complement it.
A blue-white or stark cool white on trim can push Waterloo toward feeling clinical, especially in rooms with north-facing light.
With an LRV just above 28, Waterloo does not reflect much light on its own. Pair it with dark floors in a dim room and the space can feel heavy.
Common questions
The Benjamin Moore color code is CSP-555. The precise LRV is 28.06, which puts it in the medium-to-deep range. The hex and RGB values render in the spec block on this page.
According to our color facts, Waterloo CSP-555 is listed for interior use only. If you need a similar blue for an exterior project, ask your Benjamin Moore retailer about comparable colors in their exterior lines.
An eggshell finish is the most common choice for walls. It is easy to clean and does not emphasize surface imperfections the way a flat finish can. In higher-traffic areas or rooms prone to moisture, a satin finish works well.
Both sit in the medium-depth cornflower blue range. They are similar in spirit but will not be a true color match. Sample both on your actual walls before deciding, since your lighting and surrounding finishes will influence which reads better in your specific space.