Color
#3d209d
#3d209drgb(61, 32, 157)hsl(254, 66%, 37%)oklch(0.376 0.185 283.6)Colors that go with #3d209d
Denim, Blue and Crimson 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.
Denim #1560bd
analogousshippedDenim is #3d209d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped5 real palettes, including Procter & Gamble's brand system and Zillow's brand system put Blue beside #3d209d, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #3d209d in 4 real palettes, including Casper Sleep's brand system and Behance's brand system, as the lead colour.
Midnight Blue #191970
shipped8 real palettes, including Blue Mono and Fintech Trust put Midnight Blue beside #3d209d, as that palette's text colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #3d209d in 7 real palettes, including Nivea's brand system and Discord's brand system, as the supporting colour.
Olive Green #808000
complementaryOlive Green sits directly opposite #3d209d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #3d209d: softer than #000 and cool enough to feel like part of the same palette.
Steel Blue #4682b4
shippedDesigners have shipped Steel Blue with #3d209d: 3 real palettes, including Hershey's's brand system and Fintech Trust, as the accent.
Real palettes that use #3d209d
Tints & shades
Harmonies
Contrast
| #3d209d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 11.1:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.89:1 | 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 #3d209d as the background.
Brands using this color
Fonts for this mood
#3d209d 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 #3d209d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3d209d-aa9cc4-dfbb4e-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