Dulux Regal Purple / Purple Infusion 1 / 15RB 07/237

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Code:15RB 07/237
Name:Regal Purple
Brand:Dulux

What color is Dulux Regal Purple?

Dulux Regal Purple 15RB 07/237 is a deep, muted purple with a noticeable blue cast, reading closer to inky violet than a bright jewel tone. Its low lightness gives it substantial visual weight, making it especially effective on a feature wall, built-in shelving, or lower cabinetry. In daylight, the blue undertone is likely to feel clearer, while evening lighting can draw out its darker, more shadowy character. Pair Regal Purple with soft greyed whites, pale stone, and natural oak to keep the room grounded, or introduce brushed brass for a warmer contrast. It suits bedrooms, libraries, and dining spaces where a darker wall color can create definition without appearing black.

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What are Dulux Regal Purple undertones?

Regal Purple is a deep, soft aubergine. The HEX sample leans purple; this describes its measurable digital hue direction, not a hidden paint pigment. Warm light may bring out its red or mauve side, while cool daylight can make the violet direction clearer.

HEX value:

#423B64

RGB code:

66, 59, 100

Is Dulux Regal Purple cool or warm?

warm
cool
Color wheel

With a hue of 250°, this dark purple leans cool, but it is near the neutral line and may feel warmer in certain lighting.

15RB 07/237 Regal Purple HSL code: 250, 26%, 31%

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 Regal Purple

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 sunlightVisible temp.HueDuration
NorthCoolBluishAll day
EastWarmYellowBefore noon
WestWarmOrange-redAfter noon
SouthWarmOrange-yellowAll day

Artificial Lighting. When choosing bulbs, pay attention to their color temperature in Kelvins.
Use the slider to see how this dark purple shade looks under different lighting:

2000K
3000K
4000K
5000K
6000K
7000K

Coordinating colors.
Colors that go with Dulux Regal Purple:

Monochromatic color scheme

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

Complementary color scheme

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 Regal Purple with a blue hue, complementary colors are those with a orange hue close to 70, such as Dulux Swansdown and Green Ivy.

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

FormatCode
HEX#423B64
RGB Decimal66, 59, 100
RGB Percent25.88%, 23.14%, 39.22%
HSVHue: 250° Saturation: 41.0% Value: 39.22%
HSLhsl(250, 26, 31)
CMYKCyan: 34.0 Magenta: 41.0 Yellow: 0.0 Key: 60.78
YIQY: 65.767 I: -9.004 Q: 14.24
XYZX: 6.11 Y: 5.206 Z: 12.736
CIE LabL:27.314 a:13.599 b:-23.132
CIE LuvL:27.314 u:0.648 v:-30.383
Decimal4340580
Hunter Lab22.817, 7.872, -17.123

Color equivalents