Playground
Open in tool →Orange, blue and green — the colors of playground equipment; loud, cheerful, obviously for kids.
Color
#3d7cfargb(61, 124, 250)hsl(220, 95%, 61%)oklch(0.614 0.2 262.2)Charcoal, Crimson and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal is the text near-black for #3d7cfa: softer than #000 and cool enough to feel like part of the same palette.
Crimson completes a triad with #3d7cfa — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber is paired with #3d7cfa in 10 real palettes, including Google's brand system and Heatwave, as the accent.
13 real palettes, including Cargo's brand system and Penpot's brand system put Blue beside #3d7cfa, as the accent.
Designers have shipped Cobalt Blue with #3d7cfa: 11 real palettes, including Carrefour's brand system and Behance's brand system, as the accent.
Designers have shipped Deep Sky Blue with #3d7cfa: 9 real palettes, including Venmo's brand system and Patreon's brand system, as the supporting colour.
Designers have shipped Denim with #3d7cfa: 17 real palettes, including Coursera's brand system and Venmo's brand system, as the accent.
Designers have shipped Firebrick with #3d7cfa: 5 real palettes, including Bose's brand system and Honda's brand system, as the accent.
| #3d7cfa as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.84:1 | fail | pass | fail | |
Aaon black | 5.46:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d7cfa as the background.
#3d7cfa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #3d7cfa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3d7cfa-9ca5c4-df694e-211f2d-e9f0f1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md