Color #18DFD3 Color / Colour Code #18DFD3
This page shows the hex color code for color #18dfd3 (#18DFD3). The colour is a cyan tone with 81% saturation and 48% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #18DFD3 against common backgrounds.
Complementary Colors
#18DFD3 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 146, 176, and 206 degrees for harmonious combinations.
Triadic Palette
Three colors at 176, 296, and 56 degrees.
Color Palettes Using #18DFD3
Five shades at lightness levels 15% through 85% while keeping hue at 176 and saturation at 81%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 176 to 221 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 176 with its complement at 356 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 #18DFD3
Lightness variations at hue 176 and 81% saturation.
CSS Gradients with #18DFD3
Design Use Cases for #18DFD3
Vibrant Brand Color
#18DFD3 has a strong 81% 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.
Primary Interface Color
At 48% lightness, #18DFD3 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.
Clarity & Technology
#18DFD3 is in the cyan spectrum (hue 176). 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 #18DFD3 (hue 176) to its complement at hue 356. For a subtler effect, try pairing with an analogous color at hue 206. Use CSS: background: linear-gradient(135deg, #18dfd3, #de1724);
CSS Code for #18DFD3
Similar Colors
Colors visually similar to #18DFD3 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #18DFD3 across image editing and color design tools.
About Color #18DFD3 (#18DFD3)
#18DFD3 is a cyan color (colour) with RGB channel values of 24 red, 223 green, and 211 blue. The green channel is dominant by a ratio of 9.3:1 over the weakest channel. In HSL terms, the hue sits at 176 degrees with 81% saturation and 48% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #18DFD3 is 162/255 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 89% cyan, 0% magenta, 5% yellow, and 13% key (black).
The WCAG contrast ratio of #18DFD3 against white is 1.68:1 and against black is 12.53:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 12.53:1, or use it exclusively for decorative purposes.
The complementary colour #DE1724 creates maximum visual tension when paired with #18DFD3. For more harmonious color combinations, use the analogous colours #17DE6D and #1788DE, 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 #18DFD3
- 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 #18DFD3?
- #18DFD3 is Color #18DFD3, a cyan color (colour) with RGB(24, 223, 211), HSL(176, 81%, 48%), and CMYK(89%, 0%, 5%, 13%). Its perceived brightness is 162/255.
- Is #18DFD3 accessible for text?
- Against white, #18DFD3 has a contrast ratio of 1.68:1 (fails AA for normal text). Against black, it has 12.53:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #18DFD3?
- The complementary colour is #DE1724 (hue 356). For subtle color combinations, use analogous colours #17DE6D and #1788DE. The triadic palette adds #D017DE and #DED017 for vibrant variety.
- How do I use #18DFD3 in CSS?
- Use any format: color: #18dfd3; or rgb(24, 223, 211); or hsl(176, 81%, 48%). For CSS custom properties: --color-primary: 176 81% 48%; 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.