RAL Classic Signal blue RAL 5005

Contents

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RAL Classic RAL 5005 on kitchen cabinets (1 photo)
Signal blue for exterior (4 photos)
RAL Classic Signal blue reviews (5 photos)
What are RAL Classic Signal blue undertones?
Is Signal blue RAL 5005 cool or warm?
How light temperature affects on Signal blue
Monochromatic color scheme
Complementary color scheme
Color comparison and matching
LRV of Signal blue RAL 5005
Color codes
Color equivalents

Code:	RAL 5005
Name:	Signal blue
Brand:	RAL Classic

What color is RAL Classic Signal blue?

RAL Classic Signal blue RAL 5005 is a deep, clear blue with strong saturation and a distinctly cool cast. Its #005387 value gives it enough depth to read as bold on a full wall, while still holding its blue character rather than turning nearly black. In bright daylight, Signal blue appears cleaner and more energetic; under lower or warmer lighting, it takes on a denser, inkier look. Use it for a front door, painted cabinetry, shelving, or a focused accent wall where a substantial hit of color is wanted. Crisp white trim sharpens the contrast, while pale gray, light oak, brushed steel, and natural stone keep this shade looking purposeful rather than heavy.

RAL Classic RAL 5005 on kitchen cabinets

Want a stylish kitchen? View real-life photo examples of this fascinating cool blue hue is paired with backsplashes, countertops, and hardware.

@kuhnizov_kzn

Signal blue for exterior (4 photos)

Looking for a fresh new look for your house exterior or starting from skretch? We’ve collected pictures of real-life homes that have been painted with this cool blue hue. Find inspiration for your house’s exterior, front doors, gates, shutters, frames or windows.

@homeimprovementsireland

@kascosprayuk

@kascosprayuk

@giuliettaboggio_archidesign

RAL Classic Signal blue reviews (5 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.

@classicsplashbacks

@classicsplashbacks

@idaw_schraenke

@etalonbelgorod

@sydalinnakodu

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What are RAL Classic Signal blue undertones?

Signal blue is a deep, soft slate 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:

#005387

RGB code:

0, 83, 135

Is RAL Classic Signal blue cool or warm?

warm

cool

At 203° on the HSL hue wheel, this dark blue falls clearly in the cool range.

RAL 5005 Signal blue HSL code: 203, 100%, 26%

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 Signal blue

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 dark blue shade looks under different lighting:

4000K

2000K

3000K

4000K

5000K

6000K

7000K

Coordinating colors.
Colors that go with RAL Classic Signal 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

RAL 5005
Signal blue

Darker shades

RAL 5005
Signal blue

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 Signal blue with a green hue, complementary colors are those with a red hue close to 23, such as RAL Classic Tomato red and Salmon orange.

RAL 5005
Signal blue

Compare
RAL Classic
Signal blue RAL 5005
to any other colors

RAL Classic
Signal blue RAL 5005
color equivalents

LRV of Signal blue

Signal blue has an LRV of 10.27% and refers to Medium Dark which means that this color reflects very little light. Why LRV is important?

Light Reflectance Value scale illustration

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 10.27%, 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.
Not sure what the difference between HEX and RGB is? We break down color models in plain language. Understanding color models

Format	Code
HEX	#005387
RGB Decimal	0, 83, 135
RGB Percent	0.00%, 32.55%, 52.94%
HSV	Hue: 203° Saturation: 100.0% Value: 52.94%
HSL	hsl(203, 100, 26)
CMYK	Cyan: 100.0 Magenta: 38.52 Yellow: 0.0 Key: 47.06
YIQ	Y: 64.111 I: -66.17 Q: -1.375
XYZ	X: 7.464 Y: 7.935 Z: 24.053
CIE Lab	L:33.846 a:-0.736 b:-34.96
CIE Luv	L:33.846 u:-20.915 v:-47.89
Decimal	21383
Hunter Lab	28.169, -1.994, -30.91