Color
#3375cc
#3375ccrgb(51, 117, 204)hsl(214, 60%, 50%)oklch(0.565 0.15 256.5)Colors that go with #3375cc
Charcoal, Crimson and Copper 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 #3375cc: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #3375cc — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Copper #b87333
complementaryshippedCopper sits directly opposite #3375cc on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #3375cc in 4 real palettes, including Console Light and Telehealth, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #3375cc in 5 real palettes, including Telehealth and Fintech Trust, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #3375cc in 6 real palettes, including PlanetScale's brand system and Readymag's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #3375cc in 5 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 #3375cc in 7 real palettes, including Astro's brand system and Notion's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #3375cc
Tints & shades
Harmonies
Contrast
| #3375cc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.61:1 | pass | pass | fail |
|
Aaon black | 4.56:1 | 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 #3375cc as the background.
Brands using this color
Fonts for this mood
#3375cc 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 #3375cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3375cc-9ca9c4-df5a4e-1f1f2d-e9f0f1?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