Dulux Cloudless Sky 40BG 65/171

Contents

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What are Dulux Cloudless Sky undertones?
Is Cloudless Sky 40BG 65/171 cool or warm?
How light temperature affects on Cloudless Sky
Monochromatic color scheme
Complementary color scheme
Color comparison and matching
Color codes
Color equivalents

Code:	40BG 65/171
Name:	Cloudless Sky
Brand:	Dulux

What color is Dulux Cloudless Sky?

Dulux Cloudless Sky 40BG 65/171 is a light, airy blue with a noticeable aqua cast that keeps it from reading icy or stark. Its cool undertone is especially clear in bright daylight, while warmer evening lighting can soften the blue into a gentler blue-green. This shade has enough color to define a room without making walls feel heavy, making it well suited to bathrooms, bedrooms, laundry rooms, or a light-filled kitchen. Pair Cloudless Sky with crisp white trim, pale oak, brushed nickel, and soft grey textiles for a clean, contemporary look. For more contrast, use it alongside deep navy details or charcoal accents rather than overly warm beige.

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What are Dulux Cloudless Sky undertones?

Cloudless Sky is a light, muted light blue-green. The HEX sample leans teal; 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:

#A8DAE5

RGB code:

168, 218, 229

Is Dulux Cloudless Sky cool or warm?

warm

cool

At 191° on the HSL hue wheel, this Blue falls clearly in the cool range.

40BG 65/171 Cloudless Sky HSL code: 191, 54%, 78%

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 Cloudless Sky

Natural Lighting. During the day, natural light shifts from about 2000 K at sunrise/sunset to 5500–6500 K at noon.

Sunrise

Morning

Noon

Afternoon

Sunset

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:

2000K

3000K

4000K

5000K

6000K

7000K

Coordinating colors.
Colors that go with Dulux Cloudless Sky:

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

40BG 65/171
Cloudless Sky

Darker shades

40BG 65/171
Cloudless Sky

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 Cloudless Sky with a green hue, complementary colors are those with a red hue close to 11, such as Dulux Emporium Rose 6 and Cocoa Blush 3.

40BG 65/171
Cloudless Sky

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