Paper Crafting & Origami

Generate harmonious color palettes from a base color. Complementary, analogous, triadic, tetradic, monochromatic. CSS variables, Tailwind config, WCAG contrast.

Calculate total ROI and net gain or loss, then use CAGR for endpoint-only investments or money-weighted IRR for explicit year-end contributions.

Professional color picker with HEX, RGB, and HSL conversion, WCAG contrast checking, and palette generation. Pick colors and copy CSS-ready values instantly.

Generate scan-testable URL, email, phone, WiFi, or escaped vCard QR codes with UTF-8 capacity checks, color warnings, raster logos, PNG, and SVG.

Preview sRGB colors with adjustable color-vision models. Compare palettes and text pairs, check original contrast, and copy the simulated colors as CSV.

Plan event costs from your own guest count and USD expenses, compare an optional spending limit, and reconcile planned versus actual totals separately.

Plan one defined menu item from entered attendance, portions per attendee, explicit extra portions, and the exact yield of a package or batch.

Estimate whole batches for one potluck dish from your guest count, portion allowance, extra servings and batch yield. Keep contributor signups separately.

Split your chosen USD budget across a whole number of recipients. Keep any leftover cents visible so the allocation always reconciles.

Reduce two bounded whole-number ratio parts and allocate one explicitly entered total with auditable proportions, percentages, and boundaries.

Convert a source-owned paper grammage or basis-ream mass with explicit basis dimensions and sheet count, then optionally reconcile a same-basis reported value.