Color #646DCC Color / Colour Code #646DCC
This page shows the hex color code for color #646dcc (#646DCC). The colour is a blue tone with 50% saturation and 60% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #646DCC against common backgrounds.
Complementary Colors
#646DCC paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 205, 235, and 265 degrees for harmonious combinations.
Triadic Palette
Three colors at 235, 355, and 115 degrees.
Color Palettes Using #646DCC
Five shades at lightness levels 15% through 85% while keeping hue at 235 and saturation at 50%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 235 to 280 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 235 with its complement at 55 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 #646DCC
Lightness variations at hue 235 and 50% saturation.
CSS Gradients with #646DCC
Design Use Cases for #646DCC
Balanced UI Color
At 50% saturation, #646DCC 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 60% lightness, #646DCC 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
#646DCC sits in the blue range (hue 235). 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 #646DCC (hue 235) to its complement at hue 55. For a subtler effect, try pairing with an analogous color at hue 265. Use CSS: background: linear-gradient(135deg, #646dcc, #ccc466);
CSS Code for #646DCC
Similar Colors
Colors visually similar to #646DCC based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #646DCC across image editing and color design tools.
About Color #646DCC (#646DCC)
#646DCC is a blue color (colour) with RGB channel values of 100 red, 109 green, and 204 blue. The blue channel is dominant by a ratio of 2.0:1 over the weakest channel. In HSL terms, the hue sits at 235 degrees with 50% saturation and 60% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #646DCC is 117/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This appears dark to the human eye, so pair it with light text for adequate readability. For print production, the CMYK equivalent is 51% cyan, 47% magenta, 0% yellow, and 20% key (black).
The WCAG contrast ratio of #646DCC against white is 4.56:1 and against black is 4.60:1. This meets the AA requirement (4.5:1) for normal text on white. For AAA compliance, consider darkening to at least 42% lightness.
The complementary colour #CCC466 creates maximum visual tension when paired with #646DCC. For more harmonious color combinations, use the analogous colours #66A2CC and #9066CC, 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 #646DCC
- 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 #646DCC?
- #646DCC is Color #646DCC, a blue color (colour) with RGB(100, 109, 204), HSL(235, 50%, 60%), and CMYK(51%, 47%, 0%, 20%). Its perceived brightness is 117/255.
- Is #646DCC accessible for text?
- Against white, #646DCC has a contrast ratio of 4.56:1 (passes AA for normal text). Against black, it has 4.60:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #646DCC?
- The complementary colour is #CCC466 (hue 55). For subtle color combinations, use analogous colours #66A2CC and #9066CC. The triadic palette adds #CC666E and #6FCC66 for vibrant variety.
- How do I use #646DCC in CSS?
- Use any format: color: #646dcc; or rgb(100, 109, 204); or hsl(235, 50%, 60%). For CSS custom properties: --color-primary: 235 50% 60%; 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.