Color #668DB2 Color / Colour Code #668DB2
This page shows the hex color code for color #668db2 (#668DB2). The colour is a blue tone with 33% saturation and 55% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #668DB2 against common backgrounds.
Complementary Colors
#668DB2 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 179, 209, and 239 degrees for harmonious combinations.
Triadic Palette
Three colors at 209, 329, and 89 degrees.
Color Palettes Using #668DB2
Five shades at lightness levels 15% through 85% while keeping hue at 209 and saturation at 33%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 209 to 254 degrees create a warm, unified palette. This analogous scheme works for marketing materials, seasonal campaigns, and any design that needs visual warmth without clashing colors.
Combines the base color at hue 209 with its complement at 29 and two adjacent cool tones. This split-complementary approach provides strong visual contrast while remaining more balanced than a pure complementary scheme.
Five evenly spaced hues at 40% saturation and 80% lightness. Pastels are gentle on the eyes and work well for dashboards, onboarding screens, category tags, and any interface where multiple distinct colors are needed without visual aggression.
Shades & Tints of #668DB2
Lightness variations at hue 209 and 33% saturation.
CSS Gradients with #668DB2
Design Use Cases for #668DB2
Balanced UI Color
At 33% saturation, #668DB2 strikes a balance between vibrancy and restraint. This makes it versatile for primary UI elements like navigation bars, card headers, and form accents. It draws attention without overwhelming adjacent content.
Soft Accent & Highlight
With 55% lightness, #668DB2 has a softer, more approachable quality. It works well for hover states, subtle highlights, progress indicators, and secondary UI elements. This lightness range is particularly effective for tag backgrounds and status indicators.
Trust & Professional Identity
#668DB2 sits in the blue range (hue 209). Blue is the world's most popular color for corporate identities because it conveys trust, stability, and competence. Use it for navigation bars, link text, form focus states, and any element where user confidence matters. Financial, healthcare, and technology brands rely heavily on this hue range.
Gradient Pairing
Create a gradient from #668DB2 (hue 209) to its complement at hue 29. For a subtler effect, try pairing with an analogous color at hue 239. Use CSS: background: linear-gradient(135deg, #668db2, #b28b66);
CSS Code for #668DB2
Similar Colors
Colors visually similar to #668DB2 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #668DB2 across image editing and color design tools.
About Color #668DB2 (#668DB2)
#668DB2 is a blue color (colour) with RGB channel values of 102 red, 141 green, and 178 blue. The blue channel is dominant with a relatively balanced channel distribution. In HSL terms, the hue sits at 209 degrees with 33% saturation and 55% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #668DB2 is 134/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This is a medium-brightness color that can work with either dark or light text depending on font weight and size. For print production, the CMYK equivalent is 43% cyan, 21% magenta, 0% yellow, and 30% key (black).
The WCAG contrast ratio of #668DB2 against white is 3.49:1 and against black is 6.02:1. This only passes AA for large text (18pt+) on white. For normal body text on white, darken the color or use it on a dark background where it achieves 6.02:1.
The complementary colour #B28B66 creates maximum visual tension when paired with #668DB2. For more harmonious color combinations, use the analogous colours #66B2B1 and #6668B2, which sit 30 degrees on either side of the hue wheel. To build a complete design system, start with the monochromatic scale above for consistent shade variations, then add one complementary or triadic accent for interactive elements.
How to Explore Color #668DB2
- Enter your color value in HEX format.
- The tool converts it to RGB, HSL, CMYK format in real time.
- Copy the converted value to your clipboard.
What is HEX to RGB, HSL, CMYK color conversion
Converting from HEX to RGB, HSL, CMYK translates a color value between two different color models. Different color models are used in web design (HEX, RGB), print (CMYK), and color theory (HSL, HSV).
Related Tools & Colors
Frequently Asked Questions
- What color / colour is #668DB2?
- #668DB2 is Color #668DB2, a blue color (colour) with RGB(102, 141, 178), HSL(209, 33%, 55%), and CMYK(43%, 21%, 0%, 30%). Its perceived brightness is 134/255.
- Is #668DB2 accessible for text?
- Against white, #668DB2 has a contrast ratio of 3.49:1 (fails AA for normal text). Against black, it has 6.02:1 (passes AA). It passes AA for large text (18pt+) on white. Use the contrast checker tool for custom background pairings.
- What colours pair well with #668DB2?
- The complementary colour is #B28B66 (hue 29). For subtle color combinations, use analogous colours #66B2B1 and #6668B2. The triadic palette adds #B2668E and #8EB266 for vibrant variety.
- How do I use #668DB2 in CSS?
- Use any format: color: #668db2; or rgb(102, 141, 178); or hsl(209, 33%, 55%). For CSS custom properties: --color-primary: 209 33% 55%; then use it as hsl(var(--color-primary)).
- Is this color / colour explorer free?
- Yes, completely free with no signup required. All colour calculations run in your browser. You can explore any valid hex color code, not just the pre-generated palette.