Blueprint
Open in tool →Cyan and indigo on navy is the developer-tool look; amber is the only warm note, so it always reads as 'attention'.
Color
#feba01rgb(254, 186, 1)hsl(44, 99%, 50%)oklch(0.83 0.171 81.9)Charcoal, Deep Sky Blue and Cornflower Blue 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.
Deep Sky Blue sits directly opposite #feba01 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Designers have shipped Cornflower Blue with #feba01: 6 real palettes, including Mastodon hosted on mastodon.social's brand system and Blueprint, as the supporting colour.
Crimson is paired with #feba01 in 5 real palettes, including Tabloid and Diner, as the lead colour.
Dark Olive Green shows up next to #feba01 in 4 real palettes, including Farmers Market and Miro's brand system, as the supporting colour.
Designers have shipped Denim with #feba01: 8 real palettes, including Warner Bros.'s brand system and Wikipedia's brand system, as the supporting colour.
Designers have shipped Dodger Blue with #feba01: 5 real palettes, including Heatwave and PostHog's brand system, as the accent.
4 real palettes, including Open House and FIFA's brand system put Midnight Blue beside #feba01, as the text colour against it.
| #feba01 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.72:1 | fail | fail | fail | |
Aaon black | 12.24:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #feba01 as the background.
Cyan and indigo on navy is the developer-tool look; amber is the only warm note, so it always reads as 'attention'.
Rust, pine and sun — high-visibility earth tones that read at a distance and on a trail sign.
Blaze orange and hot yellow with one cold blue — the high-noon palette; use the blue where the eye needs to rest.
#feba01 reads as warm, vivid, playful. 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 #feba01 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/feba01-c4be9c-62b1cb-2b2d1f-f1ebe9?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