The concept of warm and cool colors predates most of the scientific tools we have today to measure color. It originated from the concept of warmth vs cold. the Oxford English Dictionary describes 18th century usage to include: Cold - applied to tints or colouring which suggest a cold sunless day, or the colder effect of evening; esp. to blue and grey, and tints akin to these. Warm - suggestive of warmth, said especially of red or yellow ... to become 'warmer' or more ruddy: "On a bright morning of July, when the grey of the sky was just beginning to warm with the rising day". I always conceptualized the concept as warm-related to the heat of the sun or cool of the water. The scientific difference deals with the sensitivity of the S cone. I am not a neuro science expert, but it has something to do with thresholds of the S cone and how colors change as they are desaturated. Blue goes from blue to darker and darker blue, but we still perceive the color as blue and we name the colors as blue light blue, sky blue, navy blue. When we change the chroma Blue goes from bright blue to gray blue. You can't do the same with yellow. We only see yellow in very specific ranges of light and chroma. We call dark yellow gold or brown and as we desaturate yellow it can either move toward green or violet. At the lowest saturations there isn't any yellow or orange or red. Have you ever heard someone describe a gray as a dark yellow gray? Nope. Beige can be pink, yellow, gold or green and gray can be green gray, blue gray or violet gray. So when the hue is yellow and it is desaturated it becomes olive green or brown - moves toward red or toward green it never stays yellow. At some point it moves to either a green gray or violet gray and looses any association with yellow. Grays are innately cool. - related to water, not the sun. Do you ever picture the sun as gray? Do you ever picture water as yellow? Where is the break between cool and warm? At what level of chroma do we determine that a yellow is no longer warm, but has moved into the cool zone? That may actually depend on your physiology - some people see more colors than other and can discern subtle changes in color better than others. It may also depend on the levels of dopamine in your system - we see colors more vividly when dopamine levels are high than we do when dopamine levels are low. I don't know if their is a definitive answer to your question about Chantilly Lace. Is it above or below the S cone threshold? It seems that the color experts at Benjamin Moore agree with many other color experts and define it as a cool white so my guess is that it is beyond the threshold of chroma where we actually perceive the color as warm even if it is in a CIE LCH hue that is generally associated with the Munsell Yellow Green hue family. BTW - CIE LCH Is linear in nature, where Munsell is not. The Muncell hues curve when mapped against LCH hues. The curvature expands as chroma and luminance are reduced. How we see color and how we measure color are not perfectly correlated.

Chantilly Lace is very bright white for an exterior. Pure white makes get be too. If you have any stone on your house best to post pictures for better comments and start your own thread

Hi - you may find these white paints are too similar in Chroma (colourfulness) to work as effectively together as you might hope. Having a minimum difference in Chroma of at least 0.2 ensures that neither white looks dingy or dirty next to the other. These whites are so close in Chroma that you would be better choosing just one and simply alter the sheen for the trim. Another approach, if you want the Chantilly Lace trim to contrast clearly with the wall, is to choose a white which has more Chroma and is somewhat darker than the wall. See lots of popular whites in the Land of Color .com Colorographies

It’s at Ballard Designs: Bunny Williams bird art