Color #21DBFC Color / Colour Code #21DBFC
This page shows the hex color code for color #21dbfc (#21DBFC). The colour is a cyan tone with 97% saturation and 56% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #21DBFC against common backgrounds.
Complementary Colors
#21DBFC paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 159, 189, and 219 degrees for harmonious combinations.
Triadic Palette
Three colors at 189, 309, and 69 degrees.
Color Palettes Using #21DBFC
Five shades at lightness levels 15% through 85% while keeping hue at 189 and saturation at 97%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 189 to 234 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 189 with its complement at 9 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 #21DBFC
Lightness variations at hue 189 and 97% saturation.
CSS Gradients with #21DBFC
Design Use Cases for #21DBFC
High-Impact Accent
With 97% saturation, #21DBFC 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 56% lightness, #21DBFC 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.
Clarity & Technology
#21DBFC is in the cyan spectrum (hue 189). 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 #21DBFC (hue 189) to its complement at hue 9. For a subtler effect, try pairing with an analogous color at hue 219. Use CSS: background: linear-gradient(135deg, #21dbfc, #fc4322);
CSS Code for #21DBFC
Similar Colors
Colors visually similar to #21DBFC based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #21DBFC across image editing and color design tools.
About Color #21DBFC (#21DBFC)
#21DBFC is a cyan color (colour) with RGB channel values of 33 red, 219 green, and 252 blue. The blue channel is dominant by a ratio of 7.6:1 over the weakest channel. In HSL terms, the hue sits at 189 degrees with 97% saturation and 56% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #21DBFC is 167/255 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 87% cyan, 13% magenta, 0% yellow, and 1% key (black).
The WCAG contrast ratio of #21DBFC against white is 1.67:1 and against black is 12.60:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 12.60:1, or use it exclusively for decorative purposes.
The complementary colour #FC4322 creates maximum visual tension when paired with #21DBFC. For more harmonious color combinations, use the analogous colours #22FCAF and #226EFC, 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 #21DBFC
- 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 #21DBFC?
- #21DBFC is Color #21DBFC, a cyan color (colour) with RGB(33, 219, 252), HSL(189, 97%, 56%), and CMYK(87%, 13%, 0%, 1%). Its perceived brightness is 167/255.
- Is #21DBFC accessible for text?
- Against white, #21DBFC has a contrast ratio of 1.67:1 (fails AA for normal text). Against black, it has 12.60:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #21DBFC?
- The complementary colour is #FC4322 (hue 9). For subtle color combinations, use analogous colours #22FCAF and #226EFC. The triadic palette adds #FC22DB and #DBFC22 for vibrant variety.
- How do I use #21DBFC in CSS?
- Use any format: color: #21dbfc; or rgb(33, 219, 252); or hsl(189, 97%, 56%). For CSS custom properties: --color-primary: 189 97% 56%; 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.