Blue
Cobalt Blue
Cobalt Blue
#0047ABClick to copy
Cobalt Blue Parameter Conversion Table
More converters →HEX#0047ABCopy
RGBrgb(0, 71, 171)Copy
HSLhsl(215, 100%, 34%)Copy
HSV/HSBhsv(215, 100%, 67%)Copy
CMYKcmyk(100%, 58%, 0%, 33%)Copy
Cobalt Blue Color Schemes
Complementary
#0047AB
Click to copy#AB6400
Click to copyAnalogous
#009DAB
Click to copy#0E00AB
Click to copySplit Complementary
#AB0E00
Click to copy#9DAB00
Click to copyMonochromatic
#0047AB
Click to copy#2477ED
Click to copy#82B2F5
Click to copy#001D45
Click to copy#000000
Click to copy#000000
Click to copyCobalt 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
8.44 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Black background #000000
2.49 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Light gray background #F5F5F5
7.74 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Dark gray background #333333
1.50 : 1
AA NormalAA LargeAAA NormalAAA Large
Cobalt 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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Cobalt Blue Color Introduction
Definition
Cobalt Blue (HEX #0047AB) has the RGB value rgb(0, 71, 171), the HSL value hsl(215°, 100%, 34%) and the CMYK print value cmyk(100%, 58%, 0%, 33%). In terms of color schemes, the complement of Cobalt Blue is #AB6400, and placing the two side by side produces a striking, eye-catching contrast; paired with the analogous colors #009CAB and #0E00AB that sit next to it on the color wheel, it transitions naturally and harmoniously; in a split-complementary scheme (#AB0E00, #9CAB00) it keeps its contrast tension without losing layering; and a monochromatic scheme built on Cobalt Blue uses gradients of lightness and saturation to create a unified design with a strong sense of depth. Under the WCAG accessibility standard, Cobalt Blue has a contrast ratio of 8.44:1 against white and 2.49:1 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, Cobalt Blue has a lightness of 34% 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: A deep mineral color.
Color Psychology
Blue can evoke calm, focus and trust, with a marked stabilizing effect; psychologically it symbolizes reason, loyalty and depth. For this reason Cobalt 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, Cobalt 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.
Cobalt 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.
