Color
#3b1047
#3b1047rgb(59, 16, 71)hsl(287, 63%, 17%)oklch(0.273 0.103 318)Colors that go with #3b1047
Charcoal, Sienna and Slate 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #3b1047: softer than #000 and cool enough to feel like part of the same palette.
Sienna #a0522d
triadicshippedSienna completes a triad with #3b1047 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Slate Blue #6a5acd
analogousshippedSlate Blue is #3b1047's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Teal #008080
split-complementshippedTeal is a split-complement of #3b1047: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Forest Green #228b22
complementaryshippedForest Green sits directly opposite #3b1047 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #3b1047 in 7 real palettes, including Southwest Airlines's brand system and Beach Hut, as the accent.
Blue #0000ff
shipped13 real palettes, including Sketch's brand system and Monzo's brand system put Blue beside #3b1047, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #3b1047: 9 real palettes, including SoFi's brand system and Open House, as the supporting colour.
Real palettes that use #3b1047
Tints & shades
Harmonies
Contrast
| #3b1047 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.54:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.35:1 | 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 #3b1047 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
#3b1047 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 #3b1047 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3b1047-bd9fc1-abcb62-2d1f2a-ece9f1?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