Theory
Deep Cool Blue
Deep Cool Blue
#1A2B4AClick to copy
Deep Cool Blue Parameter Conversion Table
More converters →HEX#1A2B4ACopy
RGBrgb(26, 43, 74)Copy
HSLhsl(219, 48%, 20%)Copy
HSV/HSBhsv(219, 65%, 29%)Copy
CMYKcmyk(65%, 42%, 0%, 71%)Copy
Deep Cool Blue Color Schemes
Complementary
#1A2B4A
Click to copy#4A391A
Click to copyAnalogous
#1A434A
Click to copy#211A4A
Click to copySplit Complementary
#4A211A
Click to copy#434A1A
Click to copyMonochromatic
#1A2B4A
Click to copy#445B86
Click to copy#768EBA
Click to copy#000000
Click to copy#000000
Click to copy#000000
Click to copyDeep Cool 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
14.11 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Black background #000000
1.49 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Light gray background #F5F5F5
12.94 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Dark gray background #333333
1.12 : 1
AA NormalAA LargeAAA NormalAAA Large
Deep Cool Blue Shade Variants
Gradient Generator →Lighten with White Mixed with white for a lighter, softer color
10%
20%
30%
40%
50%
60%
70%
80%
90%
Darken with Black Mixed with black for a deeper, heavier color
10%
20%
30%
40%
50%
60%
70%
80%
90%
Muted / Morandi Mixed with gray and desaturated for a sophisticated muted tone
10%
20%
30%
40%
50%
60%
70%
80%
90%
Deep Cool Blue Color Introduction
Definition
Deep Cool Blue (HEX #1A2B4A) has the RGB value rgb(26, 43, 74), the HSL value hsl(219°, 48%, 20%) and the CMYK print value cmyk(65%, 42%, 0%, 71%). In terms of color schemes, the complement of Deep Cool Blue is #4A391A, and placing the two side by side produces a striking, eye-catching contrast; paired with the analogous colors #1A434A and #211A4A that sit next to it on the color wheel, it transitions naturally and harmoniously; in a split-complementary scheme (#4A211A, #434A1A) it keeps its contrast tension without losing layering; and a monochromatic scheme built on Deep Cool Blue uses gradients of lightness and saturation to create a unified design with a strong sense of depth. Under the WCAG accessibility standard, Deep Cool Blue has a contrast ratio of 14.11:1 against white and 1.49:1 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, Deep Cool Blue has a lightness of 20% and a saturation of 48%, 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: A low-saturation deep cool blue, rational and composed — an inner-layer color for dark-cool business suits.
Color Psychology
Blue can evoke calm, focus and trust, with a marked stabilizing effect; psychologically it symbolizes reason, loyalty and depth. For this reason Deep Cool 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, Deep Cool 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.
Deep Cool 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.
