You can do so by determining the colour's temperature, undertone and the effects of natural and artificial light sources,” explains Wattyl Colour Consultant, Katherine Champion. Cooler whites generally complement a more modern, minimalist or coastal vibe, while warmer creamy whites work well in traditional homes.
Warm whites have a yellow, red or brown base and work well in room that get less sun and work well to create a cozy atmosphere (e.g., Cottage style) - while Cool whites have a blue or black base which work well in rooms that get a lot of sun and work well with Scandinavian or hyper-modern design styles.
Generally, you will use Warm White in toned down areas where relaxation is important and with Cool White it is best used in spaces where attention and liveliness is wanted.
The overall most popular white paint color is Benjamin Moore White Dove. The most popular white paint color from Sherwin-Williams is Pure White.
What are some warm white paints without yellow undertones? For a crisp, calming, warm white paint color without yellow undertones, try the following options: Benjamin Moore's Swiss Coffee (OC-45), Benjamin Moore's Super White (OC-152), Sherwin-Williams' Snowbound (SW 7004), or Farrow & Ball's Pointing (No. 2003).
Swiss Coffee is a soft, warm white with subtle, creamy undertones, making it a favorite among designers for creating a welcoming and soothing atmosphere. Unlike brighter whites, Swiss Coffee offers a gentle warmth without appearing too yellow or beige, allowing it to adapt to both traditional and modern interiors.
Creamy by Sherwin Williams is a beautiful, warm, off-white color with subtle hints of yellow and beige. The color's yellow undertones do come through, especially depending on lighting and color pairings, but its neutral base keeps the color grounded in the cream category.
Off-White
 Off-white paint is such a simple, clean color, making it easier to work with. The soft color makes the space look more inviting and open. The room also begins to feel larger if you contrast it with natural greenery and vibrant colors.
Sherwin Williams Extra White SW 7006 / LRV: 86
 It's one of Sherwin Williams' most popular paint colors—in fact, most painters give their clients Extra White if they don't know what trim paint white color to use. Many builders also use Extra White as their standard base trim color.
Cool whites have a blue or black base. They work well in rooms that get a lot of sun, as cool colours have the tendency to neutralise bright light. Cool whites also look crisper than warm whites, so work well in hyper-modern, minimalist or Scandinavian inspired homes. Warm whites have a yellow, red, or brown base.
It's true. Studies have shown that warm white or soft white lights in the 2700K-3000K (Kelvin) range can help reduce eye strain and improve sleep quality, making them the perfect choice for cozy reading nooks and bedroom study sessions.
If you like the traditional yellowish colour of a conventional lamp then warm white around (2700-3000K ) would be the ideal choice, this is the most popular choice for homes. If you want a modern, clean look, you may prefer the cleaner, brighter feel of a cool white lamp (4000K+).
Tip 1: Map out the room
 If warm, you will want whites with a warm undertone (pink, orange, red). If cool, you will want a white with a purple, blue, or green undertone. Flooring also plays a huge role in this as well. Make sure to note if your flooring is on the warm or cool toned side.
A soft white or gray creates a peaceful and clean ambiance. They can make a small bedroom feel more spacious and airy, promoting a clutter-free mind. What's more, white and light gray are excellent for those who prefer a minimalist approach.
Elegance doesn't have to be boring. Gray and yellow are fun combinations that look exceptionally good in living rooms or open, airy kitchens. Use the lighter Benjamin Moore November Rain 2142-60 for smaller spaces or the deeper Benjamin Moore Wolf Gray 2127-40 to make spacious areas feel more intimate.
Sherwin Williams Alabaster (SW 7008)
 This color is apparently used in Joanna Gaines' farmhouse, and frequently used in Fixer Upper episodes. Since everything Jo Jo touches is magic, I had to try this one out! This was the runner up to White Dove for us. It is a soft warm off-white, with a neutral base.
Alabaster by Sherwin Williams is certainly more of a warm off-white than a cool off-white, but it comes across as very slightly creamy, not yellow, with beige undertones.
In first place for the best white emulsion paint is Johnstone's Covaplus. This paint provides a consistently dependable matt finish, creating a sense of brightness and airiness in any room. Its emulsion formulation also positions it as one of the leading choices for white matt paint available in the market.
SW 7012Creamy
 This bright white has the softest of yellow undertones to create a subtle warmth in the room. Pairs wonderfully with other soft, warm hues, like Reynard.
The cream is warm and reflects yellowish undertones. Cream is a lot harder for a person with cool undertones to wear and will often require a lot of makeup.