Color
#312966
#312966rgb(49, 41, 102)hsl(248, 43%, 28%)oklch(0.326 0.103 285.1)Colors that go with #312966
Sea Green, Steel Blue and Teal 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
split-complementshippedSea Green is a split-complement of #312966: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Steel Blue #4682b4
analogousshippedSteel Blue is #312966's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Teal #008080
triadicshippedTeal completes a triad with #312966 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Dark Olive Green #556b2f
complementaryshippedDark Olive Green sits directly opposite #312966 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped9 real palettes, including Alaska Airlines's brand system and Sketch's brand system put Blue beside #312966, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #312966: 6 real palettes, including Open House and SoFi's brand system, as the supporting colour.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #312966: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #312966 in 10 real palettes, including Casper Sleep's brand system and Marvel's brand system, as the lead colour.
Real palettes that use #312966
Tints & shades
Harmonies
Contrast
| #312966 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.81:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.64:1 | 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 #312966 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
#312966 reads as cool, dark, luxury. 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 #312966 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/312966-a69cc4-dfac4e-271f2d-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