Sherwin-Williams Moody Blue SW 6221: Undertones & Rooms

Sherwin-Williams Moody Blue (SW 6221) sounds dramatic, and the name throws people off. It is not a navy and it is not an inky midnight blue. It is a soft, dusty mid-tone blue with a gray base: the kind of blue that feels lived-in and calm rather than bold. Brush it on a sample and the surprise is how grounded it looks, more chambray than cobalt, more vintage denim than royal. That gray underpinning is exactly what keeps Moody Blue from feeling juvenile or loud, and it is the reason this mid-blue works in grown-up rooms where a brighter blue would feel like a kid's bedroom.

This profile is for the homeowner deciding whether Moody Blue is the right depth of blue for a wall, a built-in, or a set of cabinets: how its undertones behave, the published LRV and hex, the rooms it flatters, the trim that frames it, and how it differs from the near-twins shoppers line it up against. It is one of the blues in our wider Sherwin-Williams interior paint colors guide, and you can see where blues fit in our best interior paint colors for 2026 roundup.

The numbers behind Moody Blue SW 6221

Start with the published data; these figures predict the wall better than the name or a fan-deck chip. They come from the Sherwin-Williams color tools:

Sources: Sherwin-Williams SW 6221 Moody Blue color data, retrieved 2026; The Spruce paint undertone references.

The LRV of 31 is the figure most people underestimate. That is a genuine mid-tone, on the deeper side of medium. It reflects only about a third of the light that hits it, which is why Moody Blue reads as a real, saturated wall color rather than a soft tint, and why it can make a small or dark room feel cocooning rather than airy. It sits squarely between a pale blue and a navy: far deeper than an airy sky color, but nowhere near the LRV 4 to 6 range of a true navy like SW Naval. If you want the same blue family at much greater depth, our SW Naval profile shows how a near-black blue reshapes the same rooms.

The undertones: blue on a gray foundation

Moody Blue is not a chameleon the way a balanced blue-green-gray like Sea Salt is. Its hue stays recognizably blue across most conditions. What shifts is the temperature and how prominent the gray base reads, and that is where it surprises people who expected a cleaner, more vivid blue.

• The dusty blue read. The default. In balanced or warm light the gray base softens the blue into a calm, chambray or vintage-denim tone. This is the version that makes Moody Blue feel sophisticated rather than bright.
• The slightly teal read. Under cool daylight, a faint green-gray can step forward, nudging Moody Blue a hair toward a dusty teal. It never becomes green, but it can read a touch more complex than a pure blue.
• The grayed-down read. In dim or low light the gray base dominates and Moody Blue can lose some of its blue identity, settling toward a slate or storm gray. This is the version you live with at night under lamplight, and the one to test before you commit.

Because Moody Blue carries that gray foundation, the direction a room faces changes how warm or cool it feels more than it changes the hue itself, as the interior color families guide explains. Typical behavior across the four Northern Hemisphere orientations, and across a warm 2700K bulb versus a neutral 4000K one:

Sources: American Institute of Architects daylight reference; Sherwin-Williams SW 6221 color data; designer field notes on mid-tone blues.

The practical takeaway: a warm 2700K bulb keeps Moody Blue looking like a friendly chambray, while a cooler 4000K bulb pushes it toward slate and lets the gray dominate after dark. In a north-facing room you will get the most muted, stormy version, which can be exactly the cocooning effect you want in a study or a bedroom, or can feel flat if you wanted a livelier blue. South and east rooms keep it warmer and more clearly blue. If you want a lighter, airier blue that holds its brightness in dim or north light, see the comparison with Windy Blue below.

The rooms Moody Blue was made for

At LRV 31, Moody Blue is a color for rooms where you want depth and calm, not brightness. Its gray base makes it forgiving and grown-up, which steers it toward a clear set of spaces:

• Bedrooms: the strongest use. The dusty, low-energy blue is genuinely restful and reads as cozy in a primary or guest bedroom, especially on all four walls in a room with decent daylight. It pairs beautifully with white, cream, and warm wood.
• Home offices and studies: the slightly stormy, focused quality suits a room meant for concentration. It photographs well on video calls and feels more considered than a plain gray.
• Powder rooms and small baths: a small windowless space is the one place you can lean into the deep read. Moody Blue wraps a powder room in a jewel-box feeling against white tile and brass or matte-black fixtures.
• Cabinets and built-ins: increasingly the headline use. On kitchen lowers, an island, a vanity, or a library wall of shelves, Moody Blue reads as a custom, slightly vintage blue against white uppers and warm counters. For the cabinetry call between brands, our Sherwin-Williams vs Benjamin Moore interior comparison covers how the two brands' finishes wear.
• Accent walls: in a living room where wall-to-wall mid-blue would be a lot, Moody Blue on a single fireplace or headboard wall adds depth without darkening the whole space. Our blue living room paint ideas show how mid-blues work as accents.

Where to be careful: a large north-facing great room painted wall to wall can feel cold and flat, because the room's cool light plus the color's own gray base drains its warmth. In big open spaces, most designers use Moody Blue as an accent or reserve it for a more enclosed adjoining room. And in a room with very little natural light and only warm builder bulbs, expect the duller, grayer version rather than a crisp blue. Our interior house painting cost guide covers what a repaint should run if you are reworking a whole room.

Trim, ceiling, and decor that flatter it

A mid-tone blue with a gray base needs a clean, slightly warm white beside it to stay crisp. Too cold a white makes Moody Blue feel chilly; too creamy a white can muddy it. The reliable pairings:

• Best all-around trim: Sherwin-Williams Pure White (SW 7005, LRV 84). Bright and only faintly warm, it gives Moody Blue clean contrast and keeps the blue reading fresh rather than dingy. The safe default.
• For a softer scheme: SW Alabaster (SW 7008, LRV 82). A creamy, warm white that takes the edge off the blue and makes the whole room feel cozier, good in a bedroom with warm bulbs.
• Ceiling: a flat white ceiling keeps the room from feeling top-heavy. In a small powder room you can paint the ceiling Moody Blue too for a full jewel-box effect, but only where the enclosure is the goal.
• Coordinating wall neutral: for adjoining rooms, a warm greige softens and balances the blue. Our profiles of SW Agreeable Gray and SW Repose Gray both flow naturally beside a dusty blue.
• Decor and finishes: warm woods (white oak, walnut), brass and aged-gold hardware, cream and natural linen, and rattan all warm Moody Blue up and bring out its chambray side. Brushed nickel and matte black read crisp and modern. Cool gray-washed floors push it toward slate.

For a softer, greener counterpoint in a connected room, a calm spa hue like Sea Salt sits well in the same palette as Moody Blue; our SW Sea Salt profile covers that lighter blue-green if you want one airy room beside one deeper one.

Moody Blue vs the colors people cross-shop

Moody Blue has three near-twins that shoppers line up against it, and the depth differences are easy to misjudge from a small chip. Knowing which way each one leans saves a wrong sample:

• vs SW Riverway (SW 6222): the direct neighbor one step down the same color strip. Riverway is noticeably deeper and more saturated, with a clearer teal-blue character and a lower LRV in the low-20s, so it reads as a true moody teal-blue rather than a dusty mid-blue. Choose Moody Blue for a softer, grayer, more restful read; choose Riverway when you want more depth and a hint of green-teal drama.
• vs SW Windy Blue (SW 6240): the lighter, airier alternative. Windy Blue is a pale sky-gray with a much higher LRV, so it keeps a room feeling open and bright where Moody Blue makes it cozier and deeper. If you love the hue but a room is small, dark, or north-facing and you want air rather than enclosure, Windy Blue is the lighter answer; Moody Blue is the one with body and depth.
• vs SW Copen Blue (SW 0068): a historic-collection blue with a clearer green-gray cast and a slightly more muted, vintage feel. Copen Blue and Moody Blue land at similar depth, but Copen reads a touch greener and more old-world, while Moody Blue stays closer to a clean chambray. Pick Copen Blue for a heritage, slightly dustier-green look; pick Moody Blue for a cleaner, more contemporary dusty blue.

The short version: Windy Blue is lighter, Riverway is deeper and more teal, and Copen Blue is a touch greener and more historic. Moody Blue sits in the sweet spot between them: a true mid-tone, clearly blue, softened by gray. We untangle brand-to-brand differences in formula, coverage, and finish in the full Sherwin-Williams vs Benjamin Moore interior comparison.

How to test Moody Blue before you commit

A mid-tone blue at LRV 31 is one of the riskiest colors to judge from a small chip, because the depth and the gray base both look different at scale than they do on a 3-inch sample under store light near 4000K. The reliable method is a large peel-and-stick sample (Sherwin-Williams sells one) taped to at least two walls and checked mid-morning, mid-afternoon, and after dark under your normal bulbs; pay special attention to the dim-light, slate-gray version, because that is what you live with at night. The faster, no-paint first pass is a digital visualizer: upload a photo of the room and apply Moody Blue beside Windy Blue (lighter) and Riverway (deeper) to see which depth your light wants, ruling out the two that were never going to work before you buy a single can.

Frequently asked questions

Disclaimer: Sherwin-Williams and SW 6221 Moody Blue are trademarks of The Sherwin-Williams Company. Benjamin Moore and Behr are trademarks of their respective owners. FacadeColorizer is an independent paint visualization service and is not affiliated with, endorsed by, or sponsored by Sherwin-Williams, Benjamin Moore, or Behr. Screen color approximates the manufacturer's sample; always confirm with a physical sample before purchase. Sources: Sherwin-Williams SW 6221 Moody Blue color data 2026, Sherwin-Williams Riverway SW 6222, Windy Blue SW 6240, Copen Blue SW 0068, Pure White SW 7005 and Alabaster SW 7008 color data, The Spruce paint undertone references, and designer field notes on mid-tone blues.