Blue
Signal Blue (RAL 5005)
Signal Blue (RAL 5005)
#154889Click to copy
Signal Blue (RAL 5005) Parameter Conversion Table
More converters →HEX#154889Copy
RGBrgb(21, 72, 137)Copy
HSLhsl(214, 73%, 31%)Copy
HSV/HSBhsv(214, 85%, 54%)Copy
CMYKcmyk(85%, 47%, 0%, 46%)Copy
Signal Blue (RAL 5005) Color Schemes
Complementary
#154889
Click to copy#895615
Click to copyAnalogous
#158289
Click to copy#1C1589
Click to copySplit Complementary
#891C15
Click to copy#828915
Click to copyMonochromatic
#154889
Click to copy#3979CB
Click to copy#8AB0E0
Click to copy#071A31
Click to copy#000000
Click to copy#000000
Click to copySignal Blue (RAL 5005) WCAG Accessibility Contrast
WCAG Calculator →The contrast ratio of this color against common foreground/background colors (based on the WCAG 2.1 standard)
Sample text Aa
White background #FFFFFF
9.05 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Black background #000000
2.32 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Light gray background #F5F5F5
8.30 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Dark gray background #333333
1.40 : 1
AA NormalAA LargeAAA NormalAAA Large
Signal Blue (RAL 5005) Shade Variants
Gradient Generator →Lighten with White Mixed with white for a lighter, softer color
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Darken with Black Mixed with black for a deeper, heavier color
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Muted / Morandi Mixed with gray and desaturated for a sophisticated muted tone
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Signal Blue (RAL 5005) Color Introduction
Definition
Signal Blue (RAL 5005) (HEX #154889) has the RGB value rgb(21, 72, 137), the HSL value hsl(214°, 73%, 31%) and the CMYK print value cmyk(85%, 47%, 0%, 46%). In terms of color schemes, the complement of Signal Blue (RAL 5005) is #895615, and placing the two side by side produces a striking, eye-catching contrast; paired with the analogous colors #158289 and #1C1589 that sit next to it on the color wheel, it transitions naturally and harmoniously; in a split-complementary scheme (#891C15, #828915) it keeps its contrast tension without losing layering; and a monochromatic scheme built on Signal Blue (RAL 5005) uses gradients of lightness and saturation to create a unified design with a strong sense of depth. Under the WCAG accessibility standard, Signal Blue (RAL 5005) has a contrast ratio of 9.05:1 against white and 2.32:1 against black; paired with a white background it reaches AAA, making body text highly readable.
Color Characteristics
Blue is the color of sky and ocean, evoking vastness, trust and reason. Steady and imposing, it is almost irreplaceable in technology, finance and corporate identity design. Specifically, Signal Blue (RAL 5005) has a lightness of 31% and a saturation of 73%, steady and powerful as a background or primary color, pairing well with light text for good readability; moreover, its saturation is moderate, keeping the color’s emotional expression without becoming overly assertive. In a word: The standard indication and signal blue.
Color Psychology
Blue can evoke calm, focus and trust, with a marked stabilizing effect; psychologically it symbolizes reason, loyalty and depth. For this reason Signal Blue (RAL 5005) tends to leave a first impression of being cool and reliable in the viewer’s mind, and this emotional tone also defines the role it plays in design.
Best Uses
Blue suits fintech, corporate websites, government systems and any scene that needs professional trust. In real projects, Signal Blue (RAL 5005) is also often used as a dark background or heading text color; in “Blue”-themed designs, the adjacent colors or lightness gradients built around it quickly establish a cohesive, clearly layered color scheme.
Signal Blue (RAL 5005) Featured In
This color is included in the following color cards and color families. Click a card to browse more colors in the corresponding collection.