Color
#3f644e
#3f644ergb(63, 100, 78)hsl(144, 23%, 32%)oklch(0.468 0.056 157.3)Colors that go with #3f644e
Charcoal, Cadet Blue and Champagne 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 #3f644e: softer than #000 and cool enough to feel like part of the same palette.
Cadet Blue #5f9ea0
shippedCadet Blue is paired with #3f644e in 4 real palettes, including Paper & Pine and Alpine, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Champagne #f7e7ce
shippedChampagne is paired with #3f644e in 5 real palettes, including Darkroom and BrandSweets's brand system, as the surface under it — a combination designers have actually shipped, not a computed rotation.
Copper #b87333
shippedCopper is paired with #3f644e in 5 real palettes, including Desert Road and Clay & Linen, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #3f644e in 7 real palettes, including Gemstone and Codecademy's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #3f644e in 10 real palettes, including HP's brand system and Intel's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Goldenrod #daa520
shippedGoldenrod is paired with #3f644e in 5 real palettes, including Fireside and Mid-Century, as the accent — a combination designers have actually shipped, not a computed rotation.
Rose Gold #b76e79
complementaryRose Gold sits directly opposite #3f644e 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 #3f644e
Tints & shades
Harmonies
Contrast
| #3f644e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.68:1 | pass | pass | fail |
|
Aaon black | 3.14:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f644e as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #3f644e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3f644e-a2beb0-ca59d4-1f2d2b-eaf1e9?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