Harbour
Open in tool →Steel blue and haze with a buoy orange on a pale grey — the maritime palette every port town uses for a reason.
Color
#405582
#405582
hex
#405582rgb
rgb(64, 85, 130)hsl
hsl(221, 34%, 38%)oklch
oklch(0.453 0.079 264.4)Closest name: Dusk (#4e5481)Relative luminance 0.092
Colors that go with #405582
Sea Green, Steel Blue and Dark Olive 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.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #405582 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Steel Blue #4682b4
analogousshippedSteel Blue is #405582's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Dark Olive Green #556b2f
complementaryshippedDark Olive Green sits directly opposite #405582 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #405582 in 4 real palettes, including McDonald's's brand system and Warner Bros.'s brand system, as the lead colour.
Blue #0000ff
shipped7 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #405582, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #405582: 4 real palettes, including Coca-Cola's brand system and Blue Mono, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #405582 in 14 real palettes, including Walgreens's brand system and Codecademy's brand system, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #405582: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #405582
Tints & shades
Harmonies
Contrast
| #405582 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.4:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.84:1 | 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 #405582 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
mcpConnect your agent — build around #405582
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #405582 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/405582-9ca4c4-df6b4e-211f2d-e9eff1?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