Color #81EFDE Color / Colour Code #81EFDE
This page shows the hex color code for color #81efde (#81EFDE). The colour is a cyan tone with 77% saturation and 72% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #81EFDE against common backgrounds.
Complementary Colors
#81EFDE paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 141, 171, and 201 degrees for harmonious combinations.
Triadic Palette
Three colors at 171, 291, and 51 degrees.
Color Palettes Using #81EFDE
Five shades at lightness levels 15% through 85% while keeping hue at 171 and saturation at 77%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 171 to 216 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 171 with its complement at 351 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 #81EFDE
Lightness variations at hue 171 and 77% saturation.
CSS Gradients with #81EFDE
Design Use Cases for #81EFDE
Vibrant Brand Color
#81EFDE has a strong 77% 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.
Light Background Tint
#81EFDE at 72% lightness creates a gentle tinted background. Use it for section backgrounds, alert banners, or card surfaces that need to stand out from a white page without strong contrast. It adds color personality while keeping the design light and open.
Clarity & Technology
#81EFDE is in the cyan spectrum (hue 171). Cyan evokes technology, clarity, and innovation. It works well for tech product interfaces, data visualization accents, loading indicators, and futuristic design themes. Cyan provides a modern alternative to traditional blues.
Gradient Pairing
Create a gradient from #81EFDE (hue 171) to its complement at hue 351. For a subtler effect, try pairing with an analogous color at hue 201. Use CSS: background: linear-gradient(135deg, #81efde, #ef8191);
CSS Code for #81EFDE
Similar Colors
Colors visually similar to #81EFDE based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #81EFDE across image editing and color design tools.
About Color #81EFDE (#81EFDE)
#81EFDE is a cyan color (colour) with RGB channel values of 129 red, 239 green, and 222 blue. The green channel is dominant with a relatively balanced channel distribution. In HSL terms, the hue sits at 171 degrees with 77% saturation and 72% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #81EFDE is 204/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This means it appears bright to the human eye and is best paired with dark text for readability. For print production, the CMYK equivalent is 46% cyan, 0% magenta, 7% yellow, and 6% key (black).
The WCAG contrast ratio of #81EFDE against white is 1.37:1 and against black is 15.33:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 15.33:1, or use it exclusively for decorative purposes.
The complementary colour #EF8191 creates maximum visual tension when paired with #81EFDE. For more harmonious color combinations, use the analogous colours #81EFA7 and #81C8EF, 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 #81EFDE
- 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 #81EFDE?
- #81EFDE is Color #81EFDE, a cyan color (colour) with RGB(129, 239, 222), HSL(171, 77%, 72%), and CMYK(46%, 0%, 7%, 6%). Its perceived brightness is 204/255.
- Is #81EFDE accessible for text?
- Against white, #81EFDE has a contrast ratio of 1.37:1 (fails AA for normal text). Against black, it has 15.33:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #81EFDE?
- The complementary colour is #EF8191 (hue 351). For subtle color combinations, use analogous colours #81EFA7 and #81C8EF. The triadic palette adds #DE81EF and #EFDE81 for vibrant variety.
- How do I use #81EFDE in CSS?
- Use any format: color: #81efde; or rgb(129, 239, 222); or hsl(171, 77%, 72%). For CSS custom properties: --color-primary: 171 77% 72%; 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.