Color #A40366 Color / Colour Code #A40366
This page shows the hex color code for color #a40366 (#A40366). The colour is a pink tone with 96% saturation and 33% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #A40366 against common backgrounds.
Complementary Colors
#A40366 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 293, 323, and 353 degrees for harmonious combinations.
Triadic Palette
Three colors at 323, 83, and 203 degrees.
Color Palettes Using #A40366
Five shades at lightness levels 15% through 85% while keeping hue at 323 and saturation at 96%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 323 to 8 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 323 with its complement at 143 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 #A40366
Lightness variations at hue 323 and 96% saturation.
CSS Gradients with #A40366
Design Use Cases for #A40366
High-Impact Accent
With 96% saturation, #A40366 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.
Primary Interface Color
At 33% lightness, #A40366 is in the mid-range, making it ideal for interactive elements like buttons, links, and selected states. This lightness level ensures good contrast against both light and dark adjacent elements in most layouts.
Playfulness & Compassion
#A40366 is in the pink range (hue 323). Pink ranges from energetic to gentle depending on saturation and lightness. Use it for beauty and cosmetics branding, social app interfaces, Valentine's themes, and youth-oriented design. Desaturated pinks work well as soft background tints.
Gradient Pairing
Create a gradient from #A40366 (hue 323) to its complement at hue 143. For a subtler effect, try pairing with an analogous color at hue 353. Use CSS: background: linear-gradient(135deg, #a40366, #03a541);
CSS Code for #A40366
Similar Colors
Colors visually similar to #A40366 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #A40366 across image editing and color design tools.
About Color #A40366 (#A40366)
#A40366 is a pink color (colour) with RGB channel values of 164 red, 3 green, and 102 blue. The red channel is dominant by a ratio of 54.7:1 over the weakest channel. In HSL terms, the hue sits at 323 degrees with 96% saturation and 33% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #A40366 is 62/255 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 0% cyan, 98% magenta, 38% yellow, and 36% key (black).
The WCAG contrast ratio of #A40366 against white is 7.54:1 and against black is 2.78:1. This exceeds the AAA requirement (7:1) for normal text on white, making it excellent for body text and small UI labels on light backgrounds.
The complementary colour #03A541 creates maximum visual tension when paired with #A40366. For more harmonious color combinations, use the analogous colours #9203A5 and #A50316, 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 #A40366
- 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 #A40366?
- #A40366 is Color #A40366, a pink color (colour) with RGB(164, 3, 102), HSL(323, 96%, 33%), and CMYK(0%, 98%, 38%, 36%). Its perceived brightness is 62/255.
- Is #A40366 accessible for text?
- Against white, #A40366 has a contrast ratio of 7.54:1 (passes AA for normal text). Against black, it has 2.78:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #A40366?
- The complementary colour is #03A541 (hue 143). For subtle color combinations, use analogous colours #9203A5 and #A50316. The triadic palette adds #67A503 and #0367A5 for vibrant variety.
- How do I use #A40366 in CSS?
- Use any format: color: #a40366; or rgb(164, 3, 102); or hsl(323, 96%, 33%). For CSS custom properties: --color-primary: 323 96% 33%; 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.