Color
#290db5
#290db5rgb(41, 13, 181)hsl(250, 87%, 38%)oklch(0.372 0.228 273)Colors that go with #290db5
Olive Green, Midnight Blue 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.
Olive Green #808000
complementaryOlive Green sits directly opposite #290db5 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Midnight Blue #191970
shippedMidnight Blue is paired with #290db5 in 3 real palettes, including Blue Mono and Fintech Trust, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Steel Blue #4682b4
analogousshippedSteel Blue is #290db5's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sienna #a0522d
split-complementSienna is a split-complement of #290db5: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue Violet #8a2be2
analogousshippedBlue Violet is #290db5's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #290db5: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Sea Green #2e8b57
triadicSea Green completes a triad with #290db5 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Rust #b7410e
triadicRust completes a triad with #290db5 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Real palettes that use #290db5
Tints & shades
Harmonies
Contrast
| #290db5 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 11.54:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.82:1 | 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 #290db5 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
#290db5 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 #290db5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/290db5-a79cc4-dfb14e-281f2d-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