Dulux Sea Blue
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| Code: | |
| Name: | Sea Blue |
| Brand: | Dulux |
What color is Dulux Sea Blue?
Dulux Sea Blue is a clear, mid-tone blue with a cool cast and enough saturation to hold its own on a wall. Its balanced depth keeps it from feeling overly pale, while the blue remains clean rather than heavily greyed or green-leaning. In bright daylight, Sea Blue appears crisp and open; under warmer evening lighting, it can take on a softer, slightly muted character. Use it in bathrooms, bedrooms, or a study, or apply it to cabinetry for a defined hit of color. Pair it with white trim, pale oak, brushed nickel, charcoal accents, or sandy beige textiles for contrast.
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What are Dulux Sea Blue undertones?
Sea Blue is a midtone, soft dusty 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:
88, 141, 195
Is Dulux Sea Blue cool or warm?
At 210° on the HSL hue wheel, this dark blue falls clearly in the cool range.
Sea Blue HSL code: 210, 47%, 55%
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 Sea Blue
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 dark blue shade looks under different lighting:


4000K
Coordinating colors.
Colors that go with Dulux Sea Blue:
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
Sea Blue
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 Sea Blue with a blue hue, complementary colors are those with a orange hue close to 30, such as Dulux Cocoa Blush 5 and Chalk Blush 3.
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 | #588DC3 |
| RGB Decimal | 88, 141, 195 |
| RGB Percent | 34.51%, 55.29%, 76.47% |
| HSV | Hue: 210° Saturation: 54.87% Value: 76.47% |
| HSL | hsl(210, 47, 55) |
| CMYK | Cyan: 54.87 Magenta: 27.69 Yellow: 0.0 Key: 23.53 |
| YIQ | Y: 131.309 I: -48.935 Q: 5.593 |
| XYZ | X: 23.395 Y: 25.063 Z: 55.22 |
| CIE Lab | L:57.136 a:-1.889 b:-33.396 |
| CIE Luv | L:57.136 u:-23.922 v:-51.329 |
| Decimal | 5803459 |
| Hunter Lab | 50.062, -4.192, -30.354 |
Color equivalents
237
Cook's Blue
Farrow and Ball

30BB 27/236
Atlantic Surf 3
Dulux
31BB 23/340
Royal Regatta 4
Dulux
61BB 28/291
Mystic Mauve 2
Dulux
25BB 32/310
Delicate Cornflower
Dulux

66BB 29/332
Violet Kiss
Dulux
Sapphire Springs 5
Dulux
45BB 22/347
Blue Seduction 1
Dulux
33BB 32/308
Blue Seduction 2
Dulux
67BB 22/374
Blueberry Icing
Dulux
64BB 23/310
Fragrant Cloud 1
Dulux
22BB 34/304
Royal Regatta 5
Dulux
10BB 30/203
Amazon Beat 3
Dulux

10BB 32/262
Venetian Crystal 5
Dulux
206
Tivoli
Little Greene

58BB 33/270
Fragrant Cloud 2
Dulux
10BB 22/318
Venetian Crystal 4
Dulux
280
St Giles Blue
Farrow and Ball



