Color
#280c73
#280c73rgb(40, 12, 115)hsl(256, 81%, 25%)oklch(0.288 0.155 283.1)Colors that go with #280c73
Steel Blue, Olive Green and 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.
Steel Blue #4682b4
shippedSteel Blue is paired with #280c73 in 6 real palettes, including Deep Water and Glacier, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Olive Green #808000
complementaryOlive Green sits directly opposite #280c73 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shippedBlue is paired with #280c73 in 3 real palettes, including Pepsi's brand system and Sketch's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #280c73: softer than #000 and cool enough to feel like part of the same palette.
Denim #1560bd
analogousshippedDenim is #280c73's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #280c73 in 3 real palettes, including Glacier and Frost & Ember, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Forest Green #228b22
split-complementForest Green is a split-complement of #280c73: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sienna #a0522d
split-complementSienna is a split-complement of #280c73: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #280c73
Tints & shades
Harmonies
Contrast
| #280c73 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.1:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.39:1 | 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 #280c73 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#280c73 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:
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 #280c73 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/280c73-ab9cc4-dfbf4e-291f2d-e9ebf1?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