The hexadecimal color code #666EF4 represents a light shade in the blue family. In the RGB color model, this color is composed of 102 red, 110 green, and 244 blue, which translates to approximately 40% red, 43% green, and 96% blue. This makes it a highly saturated color with cool undertones that can evoke different emotional responses depending on its application.
When analyzed in the HSL (Hue, Saturation, Lightness) color space, #666EF4 has a hue of 237 degrees, a saturation level of 87%, and a lightness value of 68%. The hue angle of 237° places this color firmly in the blue spectrum. In the HSV/HSB color model, this translates to a hue of 237°, saturation of 58%, and brightness/value of 96%.
For print applications using the CMYK color model, #666EF4 would be reproduced using 58% cyan, 55% magenta, 0% yellow, and 4% black. The closest web-safe color is #6666FF, which may be useful for ensuring compatibility across older displays and systems.
This color works well in various design contexts. With its medium lightness, it's versatile enough for both foreground elements and subtle backgrounds. The high saturation makes this color vibrant and attention-grabbing, ideal for call-to-action buttons, highlights, and accent elements. When pairing #666EF4 with other colors, consider its complementary color at hue 57° for maximum contrast, or use analogous colors within 30° of its hue for harmonious combinations. The decimal representation of this color is 6713076, which can be useful in certain programming contexts.
🔢 Color Conversion Codes for #666EF4
Tailwind CSS
indigo-500
HEX
#666EF4
RGB
rgb(102, 110, 244)
RGB %
40%, 43%, 96%
HSL
hsl(237, 87%, 68%)
HSV
hsv(237, 58%, 96%)
CMYK
58%, 55%, 0%, 4%
Decimal
6713076
Web Safe
#6666FF
🎨 Color Schemes for #666EF4
Complementary
Analogous
Triadic
Split Complementary
Tetradic (Rectangle)
🔄 Alternatives to #666EF4
🌗 Shades and Tints of #666EF4
Shades (adding black)
Tints (adding white)
🎚️ Tones of #666EF4
Tones (adding gray / desaturating)
🌈 Hue Variations of #666EF4
Hue Variations (shifting the color spectrum)
👁️ Preview of #666EF4 in Use
Text on #666EF4
This demonstrates text readability on the color background. (Click to edit)
#666EF4 as Text
This shows the color used as text on white. (Click to edit)
👓 Color Blindness Simulation for #666EF4
Check how a color is perceived by people with different types of color blindness to create more accessible designs. Understanding color perception helps ensure your content is accessible to everyone.
Soft Vivid Blue is a medium, vibrant, cool blue color with a hue angle of 237°, saturation of 87%, and lightness of 68%. Its RGB value is (102, 110, 244) and its CMYK breakdown is C:58% M:55% Y:0% K:4%.
This is a Summer (Cool) color palette archetype. Trust, Loyalty, Wisdom, Confidence. Blue is considered beneficial to the mind and body.
Frequently Asked Questions About #666EF4
What is the HEX code for Soft Vivid Blue? +
The HEX code for Soft Vivid Blue is #666EF4. In CSS you can use it directly as color: #666EF4; or as a background: background-color: #666EF4;. The three-character shorthand is not available for this color since it cannot be reduced without changing the value. Use the full six-character hex for accurate reproduction in any web or design project.
What is the RGB value of #666EF4? +
The RGB value of #666EF4 is rgb(102, 110, 244). This means the color contains 102 out of 255 parts red, 110 out of 255 parts green, and 244 out of 255 parts blue. Red is the moderate channel in this color mix. You can use the full RGB function in any CSS property: color: rgb(102, 110, 244);
What is the HSL value of #666EF4? +
The HSL value of #666EF4 is hsl(237, 87%, 68%). The hue is 237°, placing it in the blue family on the color wheel. The saturation is 87%, making it vibrant. The lightness is 68%, making it medium. HSL is the most useful format for programmatic color manipulation in CSS, as you can easily adjust lightness to create tints and shades.
Is #666EF4 a warm or cool color? +
#666EF4 is classified as a cool color based on its hue angle of 237°. Cool colors — blues, greens, and purples — evoke calm, trust, and professionalism. They tend to recede visually and create a feeling of space. In design, cool colors are often used for technology, healthcare, and finance brands, as well as anywhere a sense of calm or reliability is needed.
What is the CMYK value of #666EF4? +
The approximate CMYK value of #666EF4 is C:58% M:55% Y:0% K:4%. CMYK (Cyan, Magenta, Yellow, Key/Black) is the color model used in physical printing. Unlike RGB which mixes light additively on screens, CMYK mixes inks subtractively on paper. Note that the RGB-to-CMYK conversion is an approximation — screen colors and print colors exist in different color gamuts, and some screen colors cannot be exactly reproduced in print. For precise print work, consult a professional print color profile or Pantone matching system.
