Design & Typography

Convert hex color codes (#RRGGBB or #RGB) to RGB, RGBA, and HSL. Live color preview, opacity slider, and one-click CSS copy for designers and developers.

User Intent: "Convert hex color to RGB for CSS"

Interactive color wheel showing how colors change based on their background using Chevreul's simultaneous contrast principle.

User Intent: "Color theory contrast calculator"

Generate perfectly harmonious layouts using the Golden Ratio (phi). Calculate dimensions and visualize geometric subdivisions.

User Intent: "Generate golden ratio layout"

Generate harmonious font scales using modular ratios and 1900 typesetting standards for consistent visual hierarchy.

User Intent: "Typographic scale generator golden ratio"

Generate perfect page layout margins (Van de Graaf canon) where text block height equals page width.

User Intent: "Golden ratio page margins calculator"

Calculate the pixel density (PPI) of any screen based on resolution and diagonal size for digital design precision.

User Intent: "What is the pixel density of my monitor?"

Convert cardstock thickness between Points (pt), Millimeters (mm), and Inches. Essential for print design and packaging.

User Intent: "Convert cardstock pt to mm"

Calculate perfect equal spacing for gallery walls and picture groupings. Balance your wall layout with mathematical precision.

User Intent: "gallery wall spacing calculator"

Calculate and generate templates for decorative envelope liners. Supports standard sizes and various flap styles for custom stationery.

User Intent: "What size liner for A7 envelope?"

Estimate fixative spray requirements for charcoal and pastel drawings. Calculate number of cans based on canvas size and number of coats.

User Intent: "How many cans of fixative for a drawing?"

Calculate the volume of gesso needed to prime your canvases or panels. Account for surface absorbency and number of coats for a perfect ground.

User Intent: "How much gesso for canvas?"

Perfect image dimensions for Instagram, Facebook, Twitter, LinkedIn, Pinterest, YouTube, TikTok. Current 2026 social media specs.

User Intent: "What size for Instagram post?"