Color #643DEA Color / Colour Code #643DEA
This page shows the hex color code for color #643dea (#643DEA). The colour is a blue tone with 80% saturation and 58% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #643DEA against common backgrounds.
Complementary Colors
#643DEA paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 224, 254, and 284 degrees for harmonious combinations.
Triadic Palette
Three colors at 254, 14, and 134 degrees.
Color Palettes Using #643DEA
Five shades at lightness levels 15% through 85% while keeping hue at 254 and saturation at 80%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 254 to 299 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 254 with its complement at 74 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 #643DEA
Lightness variations at hue 254 and 80% saturation.
CSS Gradients with #643DEA
Design Use Cases for #643DEA
Vibrant Brand Color
#643DEA has a strong 80% saturation that makes it ideal for brand identity elements. Use it for logos, primary call-to-action buttons, hero section accents, and marketing materials where visual impact matters. This saturation level is eye-catching without being harsh.
Soft Accent & Highlight
With 58% lightness, #643DEA 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
#643DEA sits in the blue range (hue 254). 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 #643DEA (hue 254) to its complement at hue 74. For a subtler effect, try pairing with an analogous color at hue 284. Use CSS: background: linear-gradient(135deg, #643dea, #c2ea3e);
CSS Code for #643DEA
Similar Colors
Colors visually similar to #643DEA based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #643DEA across image editing and color design tools.
About Color #643DEA (#643DEA)
#643DEA is a blue color (colour) with RGB channel values of 100 red, 61 green, and 234 blue. The blue channel is dominant by a ratio of 3.8:1 over the weakest channel. In HSL terms, the hue sits at 254 degrees with 80% saturation and 58% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #643DEA is 92/255 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 57% cyan, 74% magenta, 0% yellow, and 8% key (black).
The WCAG contrast ratio of #643DEA against white is 6.18:1 and against black is 3.40:1. This meets the AA requirement (4.5:1) for normal text on white. For AAA compliance, consider darkening to at least 41% lightness.
The complementary colour #C2EA3E creates maximum visual tension when paired with #643DEA. For more harmonious color combinations, use the analogous colours #3E6CEA and #BC3EEA, 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 #643DEA
- 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 #643DEA?
- #643DEA is Color #643DEA, a blue color (colour) with RGB(100, 61, 234), HSL(254, 80%, 58%), and CMYK(57%, 74%, 0%, 8%). Its perceived brightness is 92/255.
- Is #643DEA accessible for text?
- Against white, #643DEA has a contrast ratio of 6.18:1 (passes AA for normal text). Against black, it has 3.40:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #643DEA?
- The complementary colour is #C2EA3E (hue 74). For subtle color combinations, use analogous colours #3E6CEA and #BC3EEA. The triadic palette adds #EA663E and #3EEA66 for vibrant variety.
- How do I use #643DEA in CSS?
- Use any format: color: #643dea; or rgb(100, 61, 234); or hsl(254, 80%, 58%). For CSS custom properties: --color-primary: 254 80% 58%; 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.