Slate Workspace
Open in tool →Slate on slate with a single blue — the productivity-app look where the interface disappears behind the work.
Color
#657895rgb(101, 120, 149)hsl(216, 19%, 49%)oklch(0.568 0.05 258.7)Charcoal, Copper and Sea Green 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 #657895: softer than #000 and cool enough to feel like part of the same palette.
Copper sits directly opposite #657895 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sea Green completes a triad with #657895 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber is paired with #657895 in 5 real palettes, including Beach Hut and Lemon Squeezy's brand system, as the supporting colour.
5 real palettes, including Midnight Luxe and Forest Floor put Champagne beside #657895, as that palette's text colour.
Designers have shipped Cobalt Blue with #657895: 6 real palettes, including Fintech Trust and Ink & Paper, as the lead colour.
Crimson is paired with #657895 in 12 real palettes, including Retro Pop and Wendy's's brand system, as the lead colour.
Designers have shipped Deep Sky Blue with #657895: 4 real palettes, including Deep Water and Astro's brand system, as the lead colour.
| #657895 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.49:1 | fail | pass | fail | |
Aaon black | 4.67:1 | 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 #657895 as the background.
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Slate on slate with a single blue — the productivity-app look where the interface disappears behind the work.
Teal reads clinical without the coldness of pure blue; the coral accent adds warmth for reassurance moments.
Institutional blue with a highlighter-amber accent — trustworthy for parents, lively enough for students.
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 #657895 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/657895-9ca7c4-df5f4e-201f2d-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