Color
#403f73
#403f73rgb(64, 63, 115)hsl(241, 29%, 35%)oklch(0.395 0.086 282.6)Colors that go with #403f73
Copper, Midnight Blue and Powder 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.
Copper #b87333
shippedCopper is paired with #403f73 in 4 real palettes, including Dusk and Desert Road, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #403f73 in 6 real palettes, including First Snow and Plaid's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #403f73 in 6 real palettes, including First Snow and Glacier, as the accent — a combination designers have actually shipped, not a computed rotation.
Steel Blue #4682b4
analogousshippedSteel Blue is #403f73's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Taupe #483c32
shippedTaupe is paired with #403f73 in 5 real palettes, including Dusk and Darkroom, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green #556b2f
complementaryDark Olive Green sits directly opposite #403f73 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #403f73 in 3 real palettes, including Fintech Trust and Console Light, as the accent — a combination designers have actually shipped, not a computed rotation.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #403f73: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #403f73
Tints & shades
Harmonies
Contrast
| #403f73 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.65:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.18:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #403f73 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #403f73 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/403f73-a19cc4-df9b4e-261f2d-e9edf1?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