Blue color · XKCD survey name
Strong Blue Color Code: #0C06F7
The HEX code for Strong Blue is #0C06F7. It is a medium, vivid blue color made of 12 red, 6 green and 247 blue (HSL 241°, 95%, 50%). White text reads comfortably on it (8.80:1 contrast).
Strong Blue color values
#0C06F7
rgb(12, 6, 247)
hsl(241, 95%, 50%)
241, 98%, 97%
hwb(241 2% 3%)
95%, 98%, 0%, 3%
788215
CMYK is a standard screen-to-print conversion. Printed results depend on inks, paper and color profiles.
What is Strong Blue?
“Strong Blue” is a crowd-sourced name from the XKCD Color Survey, in which participants typed names for colors they were shown. It is a popular everyday label rather than an official standard.
Its hue angle of 241° places it in the blue part of the color wheel, with 95% saturation (vivid) and 50% lightness (medium). It is a cool color.
Compared with the other blue colors in the Aqeeb Studio library, it is lighter than 56% of them and more saturated than 59% of them.
Its relative luminance is 0.069, which makes it a dark color. That is below the 0.179 crossover point at which black and white text have equal contrast, so white text has the advantage.
Strong Blue counts as a dark color: its HSL lightness is 50% and its relative luminance is 0.069. White text reads comfortably on it (8.80:1 contrast).
Text contrast on Strong Blue
| Text | Preview | Ratio | AA normal | AA large | AAA normal | AAA large |
|---|---|---|---|---|---|---|
| White text | Sample text | 8.80:1 Excellent | Pass | Pass | Pass | Pass |
| Black text | Sample text | 2.38:1 Poor | Fail | Fail | Fail | Fail |
Ratios use the WCAG 2 formula and are truncated, never rounded up. Test any pair with the contrast checker.
Colors that go with Strong Blue
Complementary color
Complementary colors sit directly opposite each other on the color wheel (180° apart). They give the strongest hue contrast, which suits calls to action and accents.
Analogous colors
Analogous colors are neighbors on the wheel, 30° either side of the base hue. They blend smoothly and are easy to combine in backgrounds, gradients and illustrations.
Triadic colors
A triadic scheme uses three hues spaced 120° apart. It is lively yet balanced, and works best when one color leads and the other two act as accents.
Split-complementary colors
Split-complementary keeps the base color and uses the two colors on either side of its complement (150° and 210°). The contrast is strong but gentler than a direct complement.
Tetradic colors
A tetradic (rectangle) scheme combines two complementary pairs at 0°, 60°, 180° and 240°. It offers variety but needs one dominant color to stay balanced.
Monochromatic variants
Monochromatic variants keep the same hue and saturation and only change lightness, which makes them dependable for UI scales and subtle layered designs.
A “≈” before a name means the exact harmony color has no named match, so the link goes to the closest named color.
Tints and shades of Strong Blue
Lighter tints (mixed with white)
Darker shades (mixed with black)
Select any swatch to copy its HEX code. Build longer scales with the tints and shades tool.
Similar colors
Where to use Strong Blue
- Button, banner and badge backgrounds with white text (8.80:1 contrast)
- Accents that need to stand out: call-to-action buttons, charts and illustrations
- Corporate, finance and software branding
- Headers and navigation bars
- Charts and dashboards
- Links, buttons and primary interface accents
Use Strong Blue in CSS
:root {
--color-strong-blue: #0C06F7;
}
.element {
color: var(--color-strong-blue);
background-color: #0C06F7;
border: 2px solid #0C06F7;
}Questions about Strong Blue
What is the HEX code for Strong Blue?
Strong Blue is #0C06F7.
What is the RGB value of Strong Blue?
The RGB value of Strong Blue is 12, 6, 247: 12 red, 6 green and 247 blue on a 0–255 scale, written rgb(12, 6, 247) in CSS.
What is the HSL value of Strong Blue?
The HSL value of Strong Blue is 241°, 95%, 50% (hue, saturation, lightness), written hsl(241, 95%, 50%) in CSS.
What is the CMYK value of Strong Blue?
A standard conversion gives about C 95%, M 98%, Y 0%, K 3%. Real print results depend on the inks, paper and color profile, so treat CMYK here as a reference value.
Is Strong Blue a light or dark color?
Strong Blue counts as a dark color: its HSL lightness is 50% and its relative luminance is 0.069. White text reads comfortably on it (8.80:1 contrast).
How does Strong Blue look with white text?
White text on Strong Blue has a contrast ratio of 8.80:1, rated Excellent. It meets WCAG AA for normal text.
How does Strong Blue look with black text?
Black text on Strong Blue has a contrast ratio of 2.38:1, rated Poor. It falls below the WCAG minimum for text.
What colors go well with Strong Blue?
Yellow is its complementary color, and Cerulean Blue sits beside it as an analogous color. Lighter and darker variants of the same hue also work well for monochromatic palettes.
Where can Strong Blue be used?
It suits button, banner and badge backgrounds with white text (8.80:1 contrast); accents that need to stand out: call-to-action buttons, charts and illustrations; corporate, finance and software branding.
How do I use Strong Blue in CSS?
Use color: #0C06F7; for text, background-color: #0C06F7; for fills, or define a custom property such as --color-strong-blue: #0C06F7; and reuse it with var(--color-strong-blue).
About this color page
Crowd-sourced name from the XKCD Color Survey (CC0). Values are calculated from the HEX code; color names are labels, not trademarks or standards unless stated. Screens render colors differently, so always check important colors on your own device. See the disclaimer.