Color #E1FF66 Color / Colour Code #E1FF66
This page shows the hex color code for color #e1ff66 (#E1FF66). The colour is a yellow tone with 100% saturation and 70% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #E1FF66 against common backgrounds.
Complementary Colors
#E1FF66 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 42, 72, and 102 degrees for harmonious combinations.
Triadic Palette
Three colors at 72, 192, and 312 degrees.
Color Palettes Using #E1FF66
Five shades at lightness levels 15% through 85% while keeping hue at 72 and saturation at 100%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 72 to 117 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 72 with its complement at 252 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 #E1FF66
Lightness variations at hue 72 and 100% saturation.
CSS Gradients with #E1FF66
Design Use Cases for #E1FF66
High-Impact Accent
With 100% saturation, #E1FF66 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.
Light Background Tint
#E1FF66 at 70% 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.
Attention & Optimism
#E1FF66 is in the yellow spectrum (hue 72). Yellow attracts attention faster than any other color. Use it for warning labels, featured content markers, star ratings, and tooltip backgrounds. Pair with dark text since yellow often fails contrast checks against white.
Gradient Pairing
Create a gradient from #E1FF66 (hue 72) to its complement at hue 252. For a subtler effect, try pairing with an analogous color at hue 102. Use CSS: background: linear-gradient(135deg, #e1ff66, #8566ff);
CSS Code for #E1FF66
Similar Colors
Colors visually similar to #E1FF66 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #E1FF66 across image editing and color design tools.
About Color #E1FF66 (#E1FF66)
#E1FF66 is a yellow color (colour) with RGB channel values of 225 red, 255 green, and 102 blue. The green channel is dominant by a ratio of 2.5:1 over the weakest channel. In HSL terms, the hue sits at 72 degrees with 100% saturation and 70% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #E1FF66 is 229/255 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 12% cyan, 0% magenta, 60% yellow, and 0% key (black).
The WCAG contrast ratio of #E1FF66 against white is 1.12:1 and against black is 18.70:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 18.70:1, or use it exclusively for decorative purposes.
The complementary colour #8566FF creates maximum visual tension when paired with #E1FF66. For more harmonious color combinations, use the analogous colours #FFD166 and #94FF66, 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 #E1FF66
- 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 #E1FF66?
- #E1FF66 is Color #E1FF66, a yellow color (colour) with RGB(225, 255, 102), HSL(72, 100%, 70%), and CMYK(12%, 0%, 60%, 0%). Its perceived brightness is 229/255.
- Is #E1FF66 accessible for text?
- Against white, #E1FF66 has a contrast ratio of 1.12:1 (fails AA for normal text). Against black, it has 18.70:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #E1FF66?
- The complementary colour is #8566FF (hue 252). For subtle color combinations, use analogous colours #FFD166 and #94FF66. The triadic palette adds #66E0FF and #FF66E0 for vibrant variety.
- How do I use #E1FF66 in CSS?
- Use any format: color: #e1ff66; or rgb(225, 255, 102); or hsl(72, 100%, 70%). For CSS custom properties: --color-primary: 72 100% 70%; 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.