Color
#281f89
#281f89rgb(40, 31, 137)hsl(245, 63%, 33%)oklch(0.335 0.166 276.4)Colors that go with #281f89
Steel Blue, Olive Green 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.
Steel Blue #4682b4
analogousshippedSteel Blue is #281f89's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Olive Green #808000
complementaryOlive Green sits directly opposite #281f89 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #281f89 in 3 real palettes, including Glacier and Frost & Ember, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Sienna #a0522d
split-complementSienna is a split-complement of #281f89: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #281f89: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Rust #b7410e
triadicRust completes a triad with #281f89 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sea Green #2e8b57
triadicSea Green completes a triad with #281f89 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Dark Orchid #9932cc
analogousDark Orchid is #281f89's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Real palettes that use #281f89
Tints & shades
Harmonies
Contrast
| #281f89 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.75:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.65:1 | 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 #281f89 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
#281f89 reads as cool, vivid, technical. 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 #281f89 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/281f89-a49cc4-dfa54e-261f2d-e9ecf1?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