Color
#3347cc
#3347ccrgb(51, 71, 204)hsl(232, 60%, 50%)oklch(0.473 0.205 269.7)Colors that go with #3347cc
Medium Sea Green, Midnight Blue 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.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #3347cc in 4 real palettes, including Indigo SaaS and Console Light, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #3347cc in 4 real palettes, including Blue Mono and Telehealth, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #3347cc in 4 real palettes, including Campus and Indigo SaaS, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Olive Green #808000
complementaryOlive Green sits directly opposite #3347cc on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #3347cc: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #3347cc in 3 real palettes, including Chase's brand system and Netflix's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #3347cc in 3 real palettes, including Strava's brand system and PlanetScale's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #3347cc — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Real palettes that use #3347cc
Tints & shades
Harmonies
Contrast
| #3347cc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.21:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.91:1 | 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 #3347cc 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
#3347cc 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 #3347cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3347cc-9c9dc4-df864e-231f2d-e9eef1?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