Dark Blue-Gray (#666699) Color Meaning, Codes and Information

A complete guide to Dark Blue-Gray (#666699) covering color values, harmonies, shades, meaning, and practical uses across design, branding, and everyday visuals.

Dark Blue-Gray (#666699) Color Information

Dark Blue-Gray (#666699) RGB value is (102, 102, 153). The hex color red value is 102, green is 102, and blue is 153. Its HSL format shows a hue of 240°, saturation of 20%, and lightness of 50%, while the CMYK process values are 33%, 33%, 0%, and 40%.

Colors that pair well with Dark Blue-Gray (#666699) include Slate Gray (#708090), Pomp and Power (#86608E), and Mocha (#967969), as they maintain visual balance and harmony, whereas Copper Rose (#996666), Russian Green (#679267), and Grey Beige (#9E9764) tend to conflict with this color due to strong contrast or opposing tonal characteristics.

Clear image showing Dark Blue-Gray color swatch with hex value #666699 and RGB value (102,102,153)
Share

Dark Blue-Gray (#666699) Color Meaning

Dark Blue-Gray (#666699) is a muted, cool-toned color blending blue and gray. It belongs to the blue-gray spectrum, projecting stability and restraint. Historically, similar tones were used in military uniforms, architecture, and fine art to convey professionalism, seriousness, and sophistication. The color embodies introspection, wisdom, and composure. Dark Blue-Gray (#666699) affects psychology by fostering calm, focus, and controlled energy. In spiritual contexts, it represents grounding, balance, and reflective thought. Its neutral depth makes it suitable for both corporate and creative applications. Culturally, Dark Blue-Gray (#666699) has appeared in European and Asian textiles, art, and design, often linked to authority, intelligence, and refinement. It can symbolize mourning or solemnity in some traditions, while in modern aesthetics, it conveys elegance and minimalism. Its versatility allows it to communicate strength quietly, without overwhelming intensity.

Color Conversion

Accurate conversions of Dark Blue-Gray (#666699) across RGB, Hex, CMYK, HSL, and Lab ensure consistent color fidelity across digital, print, and design applications.

HEX
#666699
RGB
rgb(102, 102, 153)
HSL
hsl(240°, 20%, 50%)
CMYK
cmyk(33%, 33%, 0%, 40%)
HSV
hsv(240°, 33%, 60%)
XYZ
15.9806 14.6274 32.1181
Yxy
14.6274 0.2548 0.2332
Hunter Lab
38.2458 0.7388 -1.8253
CIE-Lab
45.1196 12.5191 -27.7566

RGB Values & CMYK Values

Detailed RGB and CMYK values of Dark Blue-Gray (#666699) displayed in a horizontal bar provide clear reference for digital and print color accuracy.

RGB Channels

Red102 / 255 (40%)
40%
Green102 / 255 (40%)
40%
Blue153 / 255 (60%)
60%

CMYK Ink Density

Cyan33 / 100 (33%)
33%
Magenta33 / 100 (33%)
33%
Yellow0 / 100 (0%)
Key (Black)40 / 100 (40%)
40%

Color Variations

A full range of Dark Blue-Gray (#666699) variations, including tints, shades, and tones, provides highlights, depth, and subtle desaturated options for UI design.

Color Harmonies

Harmonious color schemes for Dark Blue-Gray (#666699) created using the color wheel ensure visually balanced palettes.

Analogous

Colors adjacent on the color wheel (30° apart)

Complementary

Colors opposite on the color wheel (180° apart)

Split Complementary

Three colors using one base hue and the two hues beside its opposite

Triadic

Three colors evenly spaced (120° apart)

Tetradic

Four colors forming a rectangle on the wheel

Square

Four colors evenly spaced (90° apart)

Double Split Complementary

Four colors formed from two base hues and the colors next to their opposites

Monochromatic

Variations of a single hue

Contrast Checker (WCAG)

Luminance contrast ratios for Dark Blue-Gray (#666699) against standard backgrounds ensure readable, accessible text following Contrast Checker and WCAG 2.1 AA/AAA standards.

#FFFFFF
#666699

Sample Text

This is how your text will look with these colors.

Large Text (18pt+)

5.35:1
WCAG AA
WCAG AAA

Normal Text

5.35:1
WCAG AA
WCAG AAA

UI Components

5.35:1
WCAG AA
WCAG AAA

Color Blindness Simulator

Simulated views of Dark Blue-Gray (#666699) for different color vision deficiencies help identify potential confusion using the Color Blindness Simulator.

Normal Vision

Dark Blue-Gray (#666699)

protanopia

#66668d

Note: These simulations are approximations. Actual color vision deficiency varies by individual.

CSS Examples

Background Color

background-color: #666699;

Text Color

color: #666699;

Sample Text

Border Color

border: 2px solid #666699;

Box Shadow

box-shadow: 0 4px 6px #66669940;

Text Shadow

text-shadow: 2px 2px 4px #666699;

Sample Text

Gradient

background: linear-gradient(135deg, #666699 0%, #3c3c5a 100%);

Seamless Patterns

High-resolution seamless patterns featuring Dark Blue-Gray (#666699) provide ready-to-use backgrounds, wallpapers, and print designs for any project.

Diagonal Stripes
Polka Dots
Chevron
Diamond Grid
Hexagon
Waves
Crosshatch
Zigzag
Brick Wall
Triangles
Circles Grid
Herringbone

Icons

A collection of popular icons in Dark Blue-Gray (#666699) offers ready-to-use visuals for interfaces, designs, and creative projects.

Real-World Applications

Real-world mockups of Dark Blue-Gray (#666699) showcase its versatility across fashion, interiors, branding, and product packaging.

Fashion
Colored T-Shirt
Fashion
Baseball Cap
Interior
Living Room
Exterior
Office Complex
BRAND
Brands
Aluminum Can
Vehicle
Glossy Sportscar
Brands
Shopping Bag
Interior
Matte Wall
Brands
Flagship Phone

Useful Color Tools

A curated set of tools to help apply, analyze, and manage colors effectively in your projects

Dark Blue-Gray (#666699) Color FAQs

Frequently asked questions about Dark Blue-Gray (#666699) color meaning, symbolism, and applications. Click on any question to expand detailed answers.