Blue
Marine Blue
Marine Blue
#00477DClick to copy
Marine Blue Parameter Conversion Table
More converters →HEX#00477DCopy
RGBrgb(0, 71, 125)Copy
HSLhsl(206, 100%, 25%)Copy
HSV/HSBhsv(206, 100%, 49%)Copy
CMYKcmyk(100%, 43%, 0%, 51%)Copy
Marine Blue Color Schemes
Complementary
#00477D
Click to copy#7D3600
Click to copyAnalogous
#007D74
Click to copy#00097D
Click to copySplit Complementary
#7D0009
Click to copy#7D7400
Click to copyMonochromatic
#00477D
Click to copy#117FD2
Click to copy#58AFF1
Click to copy#000D17
Click to copy#000000
Click to copy#000000
Click to copyMarine Blue 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
9.56 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Black background #000000
2.20 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Light gray background #F5F5F5
8.77 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Dark gray background #333333
1.32 : 1
AA NormalAA LargeAAA NormalAAA Large
Marine Blue 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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Marine Blue Color Introduction
Definition
Marine Blue (HEX #00477D) has the RGB value rgb(0, 71, 125), the HSL value hsl(206°, 100%, 25%) and the CMYK print value cmyk(100%, 43%, 0%, 51%). In terms of color schemes, the complement of Marine Blue is #7D3600, and placing the two side by side produces a striking, eye-catching contrast; paired with the analogous colors #007D75 and #00087D that sit next to it on the color wheel, it transitions naturally and harmoniously; in a split-complementary scheme (#7D0008, #7D7500) it keeps its contrast tension without losing layering; and a monochromatic scheme built on Marine Blue uses gradients of lightness and saturation to create a unified design with a strong sense of depth. Under the WCAG accessibility standard, Marine Blue has a contrast ratio of 9.56:1 against white and 2.20:1 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, Marine Blue has a lightness of 25% and a saturation of 100%, steady and powerful as a background or primary color, pairing well with light text for good readability; moreover, its saturation is extremely high and its visual tension is strong, so it works best used sparingly as a focal accent. In a word: The color of the deep sea.
Color Psychology
Blue can evoke calm, focus and trust, with a marked stabilizing effect; psychologically it symbolizes reason, loyalty and depth. For this reason Marine Blue 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, Marine Blue 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.
Marine Blue 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.