Color #21DFBE Color / Colour Code #21DFBE
This page shows the hex color code for color #21dfbe (#21DFBE). The colour is a cyan tone with 75% saturation and 50% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #21DFBE against common backgrounds.
Complementary Colors
#21DFBE paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 140, 170, and 200 degrees for harmonious combinations.
Triadic Palette
Three colors at 170, 290, and 50 degrees.
Color Palettes Using #21DFBE
Five shades at lightness levels 15% through 85% while keeping hue at 170 and saturation at 75%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 170 to 215 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 170 with its complement at 350 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 #21DFBE
Lightness variations at hue 170 and 75% saturation.
CSS Gradients with #21DFBE
Design Use Cases for #21DFBE
Vibrant Brand Color
#21DFBE has a strong 75% 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.
Soft Accent & Highlight
With 50% lightness, #21DFBE 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
#21DFBE is in the cyan spectrum (hue 170). 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 #21DFBE (hue 170) to its complement at hue 350. For a subtler effect, try pairing with an analogous color at hue 200. Use CSS: background: linear-gradient(135deg, #21dfbe, #df2040);
CSS Code for #21DFBE
Similar Colors
Colors visually similar to #21DFBE based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #21DFBE across image editing and color design tools.
About Color #21DFBE (#21DFBE)
#21DFBE is a cyan color (colour) with RGB channel values of 33 red, 223 green, and 190 blue. The green channel is dominant by a ratio of 6.8:1 over the weakest channel. In HSL terms, the hue sits at 170 degrees with 75% saturation and 50% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #21DFBE 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 85% cyan, 0% magenta, 15% yellow, and 13% key (black).
The WCAG contrast ratio of #21DFBE against white is 1.70:1 and against black is 12.36:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 12.36:1, or use it exclusively for decorative purposes.
The complementary colour #DF2040 creates maximum visual tension when paired with #21DFBE. For more harmonious color combinations, use the analogous colours #20DF60 and #209FDF, 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 #21DFBE
- 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 #21DFBE?
- #21DFBE is Color #21DFBE, a cyan color (colour) with RGB(33, 223, 190), HSL(170, 75%, 50%), and CMYK(85%, 0%, 15%, 13%). Its perceived brightness is 162/255.
- Is #21DFBE accessible for text?
- Against white, #21DFBE has a contrast ratio of 1.70:1 (fails AA for normal text). Against black, it has 12.36:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #21DFBE?
- The complementary colour is #DF2040 (hue 350). For subtle color combinations, use analogous colours #20DF60 and #209FDF. The triadic palette adds #BF20DF and #DFBF20 for vibrant variety.
- How do I use #21DFBE in CSS?
- Use any format: color: #21dfbe; or rgb(33, 223, 190); or hsl(170, 75%, 50%). For CSS custom properties: --color-primary: 170 75% 50%; 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.