Color
#3f6bee
#3f6beergb(63, 107, 238)hsl(225, 84%, 59%)oklch(0.573 0.203 266)Colors that go with #3f6bee
Crimson, Orange Red and Slate Gray 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.
Crimson #dc143c
triadicshippedCrimson completes a triad with #3f6bee — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Orange Red #ff4500
shippedOrange Red is paired with #3f6bee in 5 real palettes, including Readymag's brand system and Strava's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #3f6bee in 4 real palettes, including Slate Workspace and Studio Grey, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #3f6bee in 5 real palettes, including Loom's brand system and Readymag's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Olive Green #808000
complementaryOlive Green sits directly opposite #3f6bee on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Copper #b87333
split-complementshippedCopper is a split-complement of #3f6bee: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shippedBlue is paired with #3f6bee in 3 real palettes, including MongoDB's brand system and Dropbox's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #3f6bee: softer than #000 and cool enough to feel like part of the same palette.
Real palettes that use #3f6bee
Tints & shades
Harmonies
Contrast
| #3f6bee as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.62:1 | pass | pass | fail |
|
Aaon black | 4.55:1 | pass | 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 #3f6bee 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
#3f6bee 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 #3f6bee and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3f6bee-9ca1c4-df754e-221f2d-e9eff1?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