Color #EFF3FB Color / Colour Code #EFF3FB
This page shows the hex color code for color #eff3fb (#EFF3FB). The colour is a blue tone with 60% saturation and 96% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #EFF3FB against common backgrounds.
Complementary Colors
#EFF3FB paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 190, 220, and 250 degrees for harmonious combinations.
Triadic Palette
Three colors at 220, 340, and 100 degrees.
Color Palettes Using #EFF3FB
Five shades at lightness levels 15% through 85% while keeping hue at 220 and saturation at 60%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 220 to 265 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 220 with its complement at 40 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 #EFF3FB
Lightness variations at hue 220 and 60% saturation.
CSS Gradients with #EFF3FB
Design Use Cases for #EFF3FB
Vibrant Brand Color
#EFF3FB has a strong 60% 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.
Near-White Background
At 96% lightness, #EFF3FB is very close to white but carries a subtle blue tint. This is perfect for alternating row backgrounds in tables, subtle section differentiation, and adding warmth or coolness to an otherwise stark white design.
Trust & Professional Identity
#EFF3FB sits in the blue range (hue 220). Blue is the world's most popular color for corporate identities because it conveys trust, stability, and competence. Use it for navigation bars, link text, form focus states, and any element where user confidence matters. Financial, healthcare, and technology brands rely heavily on this hue range.
Gradient Pairing
Create a gradient from #EFF3FB (hue 220) to its complement at hue 40. For a subtler effect, try pairing with an analogous color at hue 250. Use CSS: background: linear-gradient(135deg, #eff3fb, #fbf7ef);
CSS Code for #EFF3FB
Similar Colors
Colors visually similar to #EFF3FB based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #EFF3FB across image editing and color design tools.
About Color #EFF3FB (#EFF3FB)
#EFF3FB is a blue color (colour) with RGB channel values of 239 red, 243 green, and 251 blue. The blue channel is dominant with a relatively balanced channel distribution. In HSL terms, the hue sits at 220 degrees with 60% saturation and 96% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #EFF3FB is 243/255 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 5% cyan, 3% magenta, 0% yellow, and 2% key (black).
The WCAG contrast ratio of #EFF3FB against white is 1.11:1 and against black is 18.88:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 18.88:1, or use it exclusively for decorative purposes.
The complementary colour #FBF7EF creates maximum visual tension when paired with #EFF3FB. For more harmonious color combinations, use the analogous colours #EFF9FB and #F1EFFB, 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 #EFF3FB
- 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 #EFF3FB?
- #EFF3FB is Color #EFF3FB, a blue color (colour) with RGB(239, 243, 251), HSL(220, 60%, 96%), and CMYK(5%, 3%, 0%, 2%). Its perceived brightness is 243/255.
- Is #EFF3FB accessible for text?
- Against white, #EFF3FB has a contrast ratio of 1.11:1 (fails AA for normal text). Against black, it has 18.88:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #EFF3FB?
- The complementary colour is #FBF7EF (hue 40). For subtle color combinations, use analogous colours #EFF9FB and #F1EFFB. The triadic palette adds #FBEFF3 and #F3FBEF for vibrant variety.
- How do I use #EFF3FB in CSS?
- Use any format: color: #eff3fb; or rgb(239, 243, 251); or hsl(220, 60%, 96%). For CSS custom properties: --color-primary: 220 60% 96%; 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.