Color #A663FF Color / Colour Code #A663FF
This page shows the hex color code for color #a663ff (#A663FF). The colour is a purple tone with 100% saturation and 69% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #A663FF against common backgrounds.
Complementary Colors
#A663FF paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 236, 266, and 296 degrees for harmonious combinations.
Triadic Palette
Three colors at 266, 26, and 146 degrees.
Color Palettes Using #A663FF
Five shades at lightness levels 15% through 85% while keeping hue at 266 and saturation at 100%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 266 to 311 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 266 with its complement at 86 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 #A663FF
Lightness variations at hue 266 and 100% saturation.
CSS Gradients with #A663FF
Design Use Cases for #A663FF
High-Impact Accent
With 100% saturation, #A663FF is highly vivid. Reserve this for elements that need maximum attention: primary action buttons, notification badges, error states, or promotional banners. Use sparingly alongside neutral tones to avoid visual fatigue.
Soft Accent & Highlight
With 69% lightness, #A663FF 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.
Creativity & Premium Positioning
#A663FF falls in the purple spectrum (hue 266). Purple communicates creativity, wisdom, and luxury. It is effective for premium product highlights, creative portfolio accents, meditation app interfaces, and rewards program branding. Purple occupies a unique space between the energy of red and the calm of blue.
Gradient Pairing
Create a gradient from #A663FF (hue 266) to its complement at hue 86. For a subtler effect, try pairing with an analogous color at hue 296. Use CSS: background: linear-gradient(135deg, #a663ff, #baff61);
CSS Code for #A663FF
Similar Colors
Colors visually similar to #A663FF based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #A663FF across image editing and color design tools.
About Color #A663FF (#A663FF)
#A663FF is a purple color (colour) with RGB channel values of 166 red, 99 green, and 255 blue. The blue channel is dominant by a ratio of 2.6:1 over the weakest channel. In HSL terms, the hue sits at 266 degrees with 100% saturation and 69% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #A663FF is 137/255 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 35% cyan, 61% magenta, 0% yellow, and 0% key (black).
The WCAG contrast ratio of #A663FF against white is 3.59:1 and against black is 5.85:1. 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 5.85:1.
The complementary colour #BAFF61 creates maximum visual tension when paired with #A663FF. For more harmonious color combinations, use the analogous colours #616BFF and #F461FF, 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 #A663FF
- 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 #A663FF?
- #A663FF is Color #A663FF, a purple color (colour) with RGB(166, 99, 255), HSL(266, 100%, 69%), and CMYK(35%, 61%, 0%, 0%). Its perceived brightness is 137/255.
- Is #A663FF accessible for text?
- Against white, #A663FF has a contrast ratio of 3.59:1 (fails AA for normal text). Against black, it has 5.85:1 (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 #A663FF?
- The complementary colour is #BAFF61 (hue 86). For subtle color combinations, use analogous colours #616BFF and #F461FF. The triadic palette adds #FFA561 and #61FFA5 for vibrant variety.
- How do I use #A663FF in CSS?
- Use any format: color: #a663ff; or rgb(166, 99, 255); or hsl(266, 100%, 69%). For CSS custom properties: --color-primary: 266 100% 69%; 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.