Color
#3f173a
#3f173argb(63, 23, 58)hsl(308, 47%, 17%)oklch(0.281 0.081 332.5)Colors that go with #3f173a
Charcoal, Sea Green 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.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #3f173a: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #3f173a on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Teal #008080
split-complementshippedTeal is a split-complement of #3f173a: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #3f173a in 10 real palettes, including McDonald's's brand system and Beach Hut, as the lead colour.
Blue #0000ff
shipped14 real palettes, including Sketch's brand system and Tim Hortons's brand system put Blue beside #3f173a, as the accent.
Blush Pink #e8b4b8
shipped4 real palettes, including Blush and Graphite Mono put Blush Pink beside #3f173a, as the supporting colour.
Burlywood #deb887
shippedBurlywood is paired with #3f173a in 6 real palettes, including Kiln and Coastal, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #3f173a: 9 real palettes, including SoFi's brand system and Dusk, as the supporting colour.
Real palettes that use #3f173a
Tints & shades
Harmonies
Contrast
| #3f173a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.05:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.4:1 | 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 #3f173a 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
#3f173a reads as warm, 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 #3f173a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3f173a-c19fb8-87cb62-2d1f25-eee9f1?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