Color #EFF09F Color / Colour Code #EFF09F
This page shows the hex color code for color #eff09f (#EFF09F). The colour is a yellow tone with 73% saturation and 78% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #EFF09F against common backgrounds.
Complementary Colors
#EFF09F paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 31, 61, and 91 degrees for harmonious combinations.
Triadic Palette
Three colors at 61, 181, and 301 degrees.
Color Palettes Using #EFF09F
Five shades at lightness levels 15% through 85% while keeping hue at 61 and saturation at 73%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 61 to 106 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 61 with its complement at 241 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 #EFF09F
Lightness variations at hue 61 and 73% saturation.
CSS Gradients with #EFF09F
Design Use Cases for #EFF09F
Vibrant Brand Color
#EFF09F has a strong 73% 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
#EFF09F at 78% 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
#EFF09F is in the yellow spectrum (hue 61). 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 #EFF09F (hue 61) to its complement at hue 241. For a subtler effect, try pairing with an analogous color at hue 91. Use CSS: background: linear-gradient(135deg, #eff09f, #9f9ef0);
CSS Code for #EFF09F
Similar Colors
Colors visually similar to #EFF09F based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #EFF09F across image editing and color design tools.
About Color #EFF09F (#EFF09F)
#EFF09F is a yellow color (colour) with RGB channel values of 239 red, 240 green, and 159 blue. The green channel is dominant with a relatively balanced channel distribution. In HSL terms, the hue sits at 61 degrees with 73% saturation and 78% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #EFF09F is 230/255 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 0% cyan, 0% magenta, 34% yellow, and 6% key (black).
The WCAG contrast ratio of #EFF09F against white is 1.19:1 and against black is 17.63:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 17.63:1, or use it exclusively for decorative purposes.
The complementary colour #9F9EF0 creates maximum visual tension when paired with #EFF09F. For more harmonious color combinations, use the analogous colours #F0C89E and #C6F09E, 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 #EFF09F
- 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 #EFF09F?
- #EFF09F is Color #EFF09F, a yellow color (colour) with RGB(239, 240, 159), HSL(61, 73%, 78%), and CMYK(0%, 0%, 34%, 6%). Its perceived brightness is 230/255.
- Is #EFF09F accessible for text?
- Against white, #EFF09F has a contrast ratio of 1.19:1 (fails AA for normal text). Against black, it has 17.63:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #EFF09F?
- The complementary colour is #9F9EF0 (hue 241). For subtle color combinations, use analogous colours #F0C89E and #C6F09E. The triadic palette adds #9EEEF0 and #F09EEE for vibrant variety.
- How do I use #EFF09F in CSS?
- Use any format: color: #eff09f; or rgb(239, 240, 159); or hsl(61, 73%, 78%). For CSS custom properties: --color-primary: 61 73% 78%; 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.