What are Valspar Open Book undertones?
Open Book has a clear blue undertone based on its position in the color space. We identify undertones by isolating the pure hue (separating it from lightness and saturation), which avoids distortions caused by tints, tones, and shades.
This method is generally more reliable than judging undertones on a white background.
HEX value:
#9ED2E6
RGB code:
158, 210, 230
Is Valspar Open Book 8001-40C cool or warm?
warm
cool
At 197° on the HSL hue wheel, this Blue falls clearly in the cool range.
8001-40C Open Book HSL code: 197, 59%, 76%
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 Open Book
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 (Kelvins).
Use the slider to see how this Blue shade looks under different lighting:
4000K
Coordinating colors.
Colors that go with Valspar Open Book:
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
8001-40C
Open Book
Darker shades
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 Open Book with a green hue, complementary colors are those with a red hue close to 17, such as Valspar Cloak of Mystery and Cathedral Morning.
LRV of Open Book
Open Book has an LRV of 59% and refers to Light colors that reflect most 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 59%, 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. To copy the code, just click the icon to the right of it.
| Format | Code | |
|---|---|---|
| HEX | #9ed2e6 |  |
| RGB Decimal | 158, 210, 230 | |
| RGB Percent | 61.96%, 82.35%, 90.20% | |
| HSV | Hue: 197° Saturation: 31.3% Value: 90.2% | |
| HSL | hsl(197, 59, 76) | |
| CMYK | Cyan: 31.3 Magenta: 8.7 Yellow: 0.0 Key: 9.8 | |
| YIQ | Y: 196.732 I: -37.414 Q: -4.776 | |
| XYZ | X: 51.425 Y: 59.073 Z: 83.534 | |
| CIE Lab | L:81.332 a:-12.108 b:-15.277 | |
| CIE Luv | L:81.332 u:-26.127 v:-22.055 | |
| Decimal | 10408678 | |
| Hunter Lab | 76.859, -15.073, -10.638 | |
Valspar 8001-40C Open Book
Copy color code
Color equivalents
74BG 61/206
Holiday Blues 4
Dulux
SW 6793
Bluebell
Sherwin Williams
4008-9B
Sonic Sky
Valspar
S 0530-B
NCS
780
Crisp Morning Air
Benjamin Moore
4007-9B
Perfectly Blue
Valspar
8002-40C
Gossamer Threads
Valspar
779
Fairview Blue
Benjamin Moore
SW 6952
Blue Click
Sherwin Williams
M480-3
Bengal Blue
Behr
P490-2
Blue Sarong
Behr
786
Highland Breeze
Benjamin Moore
2060-60
Turquoise Haze
Benjamin Moore
P500-3
Spa Blue
Behr
S 0530-B10G
NCS
2059-60
Splash
Benjamin Moore
772
Hawaiian Breeze
Benjamin Moore
5001-7B
Ice Sculpture
Valspar