Color
#545a78
#545a78rgb(84, 90, 120)hsl(230, 18%, 40%)oklch(0.474 0.049 275.6)Colors that go with #545a78
Sea Green, Steel Blue and Copper 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 #545a78 — 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 #545a78's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Copper #b87333
shippedCopper is paired with #545a78 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 #545a78 in 7 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 #545a78 in 9 real palettes, including HP's brand system and Dutch Bros's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Firebrick #b22222
shippedFirebrick is paired with #545a78 in 5 real palettes, including Fireside and Newsprint, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Goldenrod #daa520
shippedGoldenrod is paired with #545a78 in 4 real palettes, including Open House and Mid-Century, as the accent — a combination designers have actually shipped, not a computed rotation.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #545a78: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #545a78
Tints & shades
Harmonies
Contrast
| #545a78 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.75:1 | pass | pass | fail |
|
Aaon black | 3.11:1 | 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 #545a78 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 #545a78 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/545a78-9c9ec4-df814e-231f2d-e9eef1?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