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
#f9be34rgb(249, 190, 52)hsl(42, 94%, 59%)oklch(0.834 0.157 83.5)Charcoal, Cornflower Blue and Deep Sky 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.
Cornflower Blue sits directly opposite #f9be34 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Deep Sky Blue is a split-complement of #f9be34: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson is paired with #f9be34 in 5 real palettes, including Tabloid and Diner, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green is paired with #f9be34 in 4 real palettes, including Farmers Market and Miro's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim is paired with #f9be34 in 8 real palettes, including Walmart's brand system and Warner Bros.'s brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Dodger Blue is paired with #f9be34 in 5 real palettes, including Heatwave and PostHog's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue is paired with #f9be34 in 4 real palettes, including Open House and FIFA's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
| #f9be34 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.69:1 | fail | fail | fail | |
Aaon black | 12.44:1 | 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 #f9be34 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.
Flame orange on charcoal — the sports and energy palette; one accent yellow for stats and highlights.
Blaze orange and hot yellow with one cold blue — the high-noon palette; use the blue where the eye needs to rest.
#f9be34 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 #f9be34 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/f9be34-c4bc9c-62b4cb-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