Theory
Flagstone Blue
Flagstone Blue
#657383Click to copy
Flagstone Blue Parameter Conversion Table
More converters →HEX#657383Copy
RGBrgb(101, 115, 131)Copy
HSLhsl(212, 13%, 45%)Copy
HSV/HSBhsv(212, 23%, 51%)Copy
CMYKcmyk(23%, 12%, 0%, 49%)Copy
Flagstone Blue Color Schemes
Complementary
#657383
Click to copy#837565
Click to copyAnalogous
#658283
Click to copy#666583
Click to copySplit Complementary
#836665
Click to copy#828365
Click to copyMonochromatic
#657383
Click to copy#A7A7A7
Click to copy#DADADA
Click to copy#394049
Click to copy#0C0E10
Click to copy#000000
Click to copyFlagstone 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
4.85 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Black background #000000
4.33 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Light gray background #F5F5F5
4.45 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Dark gray background #333333
2.61 : 1
AA NormalAA LargeAAA NormalAAA Large
Flagstone 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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Flagstone Blue Color Introduction
Definition
Flagstone Blue (HEX #657383) has the RGB value rgb(101, 115, 131), the HSL value hsl(212°, 13%, 45%) and the CMYK print value cmyk(23%, 12%, 0%, 49%). In terms of color schemes, the complement of Flagstone Blue is #837565, and placing the two side by side produces a striking, eye-catching contrast; paired with the analogous colors #658283 and #666583 that sit next to it on the color wheel, it transitions naturally and harmoniously; in a split-complementary scheme (#836665, #828365) it keeps its contrast tension without losing layering; and a monochromatic scheme built on Flagstone Blue uses gradients of lightness and saturation to create a unified design with a strong sense of depth. Under the WCAG accessibility standard, Flagstone Blue has a contrast ratio of 4.85:1 against white and 4.33:1 against black; paired with a white background it reaches AA, giving body text good readability.
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, Flagstone Blue has a lightness of 45% and a saturation of 13%, striking and generous as a background or primary color, offering good readability with either light or dark text; moreover, its saturation is fairly low and its gray tone is soft, carrying a quiet, Morandi-like character. In a word: A cool tone like flagstone, rational and composed — a palette for programmers' desks.
Color Psychology
Blue can evoke calm, focus and trust, with a marked stabilizing effect; psychologically it symbolizes reason, loyalty and depth. For this reason Flagstone 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, Flagstone 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.
Flagstone 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.
