Color
#3f0449
#3f0449rgb(63, 4, 73)hsl(291, 90%, 15%)oklch(0.27 0.122 321.1)Colors that go with #3f0449
Charcoal, Blue and Cadet 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 #3f0449: softer than #000 and cool enough to feel like part of the same palette.
Blue #0000ff
shipped5 real palettes, including Sketch's brand system and Tim Hortons's brand system put Blue beside #3f0449, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #3f0449: 6 real palettes, including SoFi's brand system and Open House, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #3f0449: 4 real palettes, including Blue Mono and Hershey's's brand system, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #3f0449 in 4 real palettes, including Tim Hortons's brand system and Pinterest's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #3f0449: 11 real palettes, including Discover's brand system and Heinz's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #3f0449: 6 real palettes, including MLB's brand system and AT&T's brand system, as the supporting colour.
Forest Green #228b22
complementaryForest Green sits directly opposite #3f0449 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #3f0449
Tints & shades
Harmonies
Contrast
| #3f0449 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.85:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.32:1 | 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 #3f0449 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
#3f0449 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 #3f0449 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3f0449-bf9fc1-a4cb62-2d1f29-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