Heatwave
Open in tool →Blaze orange and hot yellow with one cold blue — the high-noon palette; use the blue where the eye needs to rest.
Color
#1691fergb(22, 145, 254)hsl(208, 99%, 54%)oklch(0.652 0.189 252.2)Charcoal, Amber and 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.
Charcoal is the text near-black for #1691fe: softer than #000 and cool enough to feel like part of the same palette.
Amber is paired with #1691fe in 8 real palettes, including Heatwave and Blueprint, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Blue is paired with #1691fe in 10 real palettes, including Unity's brand system and Readymag's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Cobalt Blue is paired with #1691fe in 6 real palettes, including Blue Mono and Carrefour's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Dark Orange is paired with #1691fe in 4 real palettes, including Playground and Elastic's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Deep Sky Blue is paired with #1691fe in 6 real palettes, including Figma's brand system and Patreon's brand system — a combination designers have actually shipped, not a computed rotation.
Denim is paired with #1691fe in 12 real palettes, including Apple's brand system and Coursera's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Dark Goldenrod sits directly opposite #1691fe on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
| #1691fe as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.22:1 | fail | pass | fail | |
Aaon black | 6.52:1 | 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 #1691fe as the background.
#1691fe 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 #1691fe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/1691fe-9cadc4-df4e51-1f212d-e9f1f1?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