Color
#545f78
#545f78rgb(84, 95, 120)hsl(222, 18%, 40%)oklch(0.486 0.043 266.3)Colors that go with #545f78
Charcoal, Sea Green and Steel 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 #36454f
neutralshippedCharcoal is the text near-black for #545f78: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #545f78 — 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 #545f78's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Champagne #f7e7ce
shippedChampagne is paired with #545f78 in 4 real palettes, including Darkroom and BrandSweets's brand system, as the surface under it — a combination designers have actually shipped, not a computed rotation.
Copper #b87333
shippedCopper is paired with #545f78 in 4 real palettes, including Dusk and Desert Road, as the accent — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #545f78 in 8 real palettes, including Amazon's brand system and Retro Pop, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #545f78 in 9 real palettes, including HP's brand system and Campus, as the accent — a combination designers have actually shipped, not a computed rotation.
Firebrick #b22222
shippedFirebrick is paired with #545f78 in 5 real palettes, including Fireside and Newsprint, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #545f78
Tints & shades
Harmonies
Contrast
| #545f78 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.39:1 | pass | pass | fail |
|
Aaon black | 3.29:1 | fail | 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 #545f78 as the background.
Brands using this color
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 #545f78 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/545f78-9ca3c4-df6e4e-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