Theory
Dark Cool Indigo
Dark Cool Indigo
#282545Click to copy
Dark Cool Indigo Parameter Conversion Table
More converters →HEX#282545Copy
RGBrgb(40, 37, 69)Copy
HSLhsl(246, 30%, 21%)Copy
HSV/HSBhsv(246, 46%, 27%)Copy
CMYKcmyk(42%, 46%, 0%, 73%)Copy
Dark Cool Indigo Color Schemes
Complementary
#282545
Click to copy#424525
Click to copyAnalogous
#253245
Click to copy#382545
Click to copySplit Complementary
#453825
Click to copy#324525
Click to copyMonochromatic
#282545
Click to copy#5B5878
Click to copy#8F8CAA
Click to copy#020103
Click to copy#000000
Click to copy#000000
Click to copyDark Cool Indigo 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
14.58 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Black background #000000
1.44 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Light gray background #F5F5F5
13.37 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Dark gray background #333333
1.15 : 1
AA NormalAA LargeAAA NormalAAA Large
Dark Cool Indigo 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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Dark Cool Indigo Color Introduction
Definition
Dark Cool Indigo (HEX #282545) has the RGB value rgb(40, 37, 69), the HSL value hsl(246°, 30%, 21%) and the CMYK print value cmyk(42%, 46%, 0%, 73%). In terms of color schemes, the complement of Dark Cool Indigo is #424525, and placing the two side by side produces a striking, eye-catching contrast; paired with the analogous colors #253245 and #382545 that sit next to it on the color wheel, it transitions naturally and harmoniously; in a split-complementary scheme (#453825, #324525) it keeps its contrast tension without losing layering; and a monochromatic scheme built on Dark Cool Indigo uses gradients of lightness and saturation to create a unified design with a strong sense of depth. Under the WCAG accessibility standard, Dark Cool Indigo has a contrast ratio of 14.58:1 against white and 1.44:1 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, Dark Cool Indigo has a lightness of 21% and a saturation of 30%, steady and powerful as a background or primary color, pairing well with light text for good readability; moreover, its saturation is fairly low and its gray tone is soft, carrying a quiet, Morandi-like character. In a word: A low-saturation deep indigo, rational and mysterious — a common mouse color for engineering types.
Color Psychology
Blue can evoke calm, focus and trust, with a marked stabilizing effect; psychologically it symbolizes reason, loyalty and depth. For this reason Dark Cool Indigo 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, Dark Cool Indigo 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.
Dark Cool Indigo 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.
