Sherwin Williams Undercool SW 6957
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- Sherwin Williams Undercool reviews (1 photo)
- What are Sherwin Williams Undercool undertones?
- Is Undercool SW 6957 cool or warm?
- How light temperature affects on Undercool
- Monochromatic color scheme
- Complementary color scheme
- Color comparison and matching
- LRV of Undercool SW 6957
- Color codes
- Color equivalents
| Official page: | Undercool SW 6957 |
| Code: | SW 6957 |
| Name: | Undercool |
| Brand: | Sherwin Williams |
| Collections: | Living Well |
What color is Sherwin Williams Undercool?
Sherwin Williams Undercool SW 6957 is a clear, light blue with a distinctly cool cast and enough color to stay visible on a full wall. Its airy blue character can read a little crisper in bright daylight, while lower or warmer light may soften its intensity without making it feel muted. Use Undercool in a bathroom, laundry room, sunroom, or child’s bedroom where a fresh blue backdrop suits the space. White trim keeps the look clean, while pale gray, navy, weathered wood, and brushed nickel offer grounded coordinating notes. It also makes a strong accent on a painted door, built-in shelving, or exterior shutters against a white or light neutral façade.
Sherwin Williams Undercool reviews
View the photos of real spaces painted with this blue that were not included in specific categories. Close-ups, painted furniture, storages and dressers, hallways, stairs and ceilings.

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What are Sherwin Williams Undercool undertones?
Undercool is a mid-light, soft light blue. The HEX sample leans blue; this describes its measurable digital hue direction, not a hidden paint pigment. Warm bulbs may gray the color down, while cool daylight usually makes its blue or teal direction clearer.
HEX value:
RGB code:
127, 195, 225
Is Sherwin Williams Undercool cool or warm?
At 198° on the HSL hue wheel, this Blue falls clearly in the cool range.
SW 6957 Undercool HSL code: 198, 62%, 69%
Hue - degree on a color wheel from 0 to 360. 0 is red, 120 is green, and 240 is blue.
Saturation is expressed as a percentage. At 0%, it appears as a shade of grey, and at 100%, it is in full color.
Lightness is also a percentage value. 0% is black, and 100% is white.
How light temperature affects Undercool
Natural Lighting. During the day, natural light shifts from about 2000 K at sunrise/sunset to 5500–6500 K at noon.
In addition, natural-light temperature depends on its direction:
| Direction of sunlight | Visible temp. | Hue | Duration |
|---|---|---|---|
| North | Cool | Bluish | All day |
| East | Warm | Yellow | Before noon |
| West | Warm | Orange-red | After noon |
| South | Warm | Orange-yellow | All day |
Artificial Lighting. When choosing bulbs, pay attention to their color temperature in Kelvins.
Use the slider to see how this Blue shade looks under different lighting:


4000K
Coordinating colors.
Colors that go with Sherwin Williams Undercool:
Monochromatic color scheme
This scheme consists of various shades, tints, and tones of a single color. While it offers a perfect combination of hues, without accent décor it may become monotonous.
Lighter shades
SW 6957
Undercool
Darker shades
SW 6957
Undercool
Complementary color scheme
This color scheme is a combination of two shades that are opposite each other on the color wheel. The high contrast between these colors creates a vibrant and dynamic visual effect. For the color Undercool with a green hue, complementary colors are those with a red hue close to 18, such as Sherwin Williams Salon Rose and Breathless.
LRV of Undercool
Undercool has an LRV of 49.1% and refers to Light Medium colors that reflect half of the incident light. Why LRV is important?
Light Reflectance Value measures the amount of visible and usable light that reflects from a painted surface.
Simply put, the higher the LRV of a paint color, the brighter the room you will get.
The scale goes from 0% (absolute black, absorbing all light) to 100% (pure white, reflecting all light).
Act like a pro: When choosing paint with an LRV of 49.1%, pay attention to your bulbs' brightness. Light brightness is measured in lumens. The lower the paint's LRV, the higher lumen level you need. Every square foot of room needs at least 40 lumens. That means for a 200 ft2 living room you'll need about 8000 lumens of light – e.g., eight 1000 lm bulbs.
Color codes
We have collected almost every possible color code you could ever need.
Not sure what the difference between HEX and RGB is? We break down color models in plain language. Understanding color models
| Format | Code |
|---|---|
| HEX | #7fc3e1 |
| RGB Decimal | 127, 195, 225 |
| RGB Percent | 49.80%, 76.47%, 88.24% |
| HSV | Hue: 198° Saturation: 43.56% Value: 88.24% |
| HSL | hsl(198, 62, 69) |
| CMYK | Cyan: 43.56 Magenta: 13.33 Yellow: 0.0 Key: 11.76 |
| YIQ | Y: 178.088 I: -50.162 Q: -5.049 |
| XYZ | X: 41.852 Y: 48.975 Z: 78.462 |
| CIE Lab | L:75.436 a:-13.73 b:-21.658 |
| CIE Luv | L:75.436 u:-31.768 v:-32.095 |
| Decimal | 8373217 |
| Hunter Lab | 69.982, -15.719, -17.486 |
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