NCS S 5540-R90B
| Code: | S 5540-R90B |
| Name: | |
| Brand: | NCS |
What color is NCS S 5540-R90B?
Let’s dive into a full S 5540-R90B paint color review. Take a look at pictures of real interiors and exteriors painted with beautiful S 5540-R90B. Find out if this gorgeous cold blue paint color would look great on your living room walls or trims, kitchen cabinet, bedroom accent wall, bathroom or house exterior.
S 5540-R90B for bedroom (6 photos)
We’ve hand-picked a beautiful collection of photos of this amazing blue shade used in real bedrooms. Take a look and imagine how this wonderful cool dark paint color could transform your own bedroom space.






S 5540-R90B for living room (8 photos)
Check out this stunning Dark color used in real living rooms. Explore how this blue shade can create a unique space








NCS S 5540-R90B for bathroom (7 photos)
Looking for inspiration for your dream bathroom renovation project? These beautiful handpicked photos will show you this delightfully cool Dark blue real bathrooms.







NCS S 5540-R90B on kitchen cabinets (5 photos)
Want a stylish kitchen? View real-life photo examples of this fascinating cool blue hue is paired with backsplashes, countertops, and hardware.





NCS S 5540-R90B reviews (8 photos)
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 NCS S 5540-R90B undertones?
S 5540-R90B 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:
#013765
RGB code:
1, 55, 101
Is NCS S 5540-R90B cool or warm?
At 208° on the HSL hue wheel, this dark blue falls clearly in the cool range.
S 5540-R90B HSL code: 208, 98%, 20%
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 S 5540-R90B
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 dark blue shade looks under different lighting:


4000K
Coordinating colors.
Colors that go with NCS S 5540-R90B:
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
Darker shades
S 5540-R90B
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 S 5540-R90B with a green hue, complementary colors are those with a red hue close to 28, such as NCS and S 0505-Y80R.
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 | #013765 | |
| RGB Decimal | 1, 55, 101 | |
| RGB Percent | 0.39%, 21.57%, 39.61% | |
| HSV | Hue: 208° Saturation: 99.01% Value: 39.61% | |
| HSL | hsl(208, 98, 20) | |
| CMYK | Cyan: 99.01 Magenta: 45.54 Yellow: 0.0 Key: 60.39 | |
| YIQ | Y: 44.098 I: -46.96 Q: 2.892 | |
| XYZ | X: 3.727 Y: 3.678 Z: 12.822 | |
| CIE Lab | L:22.577 a:3.583 b:-31.519 | |
| CIE Luv | L:22.577 u:-13.129 v:-37.671 | |
| Decimal | 79717 | |
| Hunter Lab | 19.178, 1.125, -26.216 |
Color equivalents
S 4550-R90B
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RAL 5001
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S 6030-R80B
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RAL 5002
Ultramarine blue
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RAL 590-6
RAL Effect

2060-10
Symphony Blue
Benjamin Moore

RAL 5026
Pearl night blue
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S 5040-R80B
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RAL 630-6
RAL Effect

56BB 07/196
Deep Pacific
Dulux
S 4550-R80B
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S 6030-R90B
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RAL 5003
Sapphire blue
RAL Classic

RAL 5013
Cobalt blue
RAL Classic

Honest Indigo
Dulux
Oxford Blue (Weathershield)
Dulux
SW 6811
Honorable Blue
Sherwin Williams

RAL 630-5
RAL Effect

RAL 630-M
RAL Effect

S 5540-B
NCS

