Color

#3f7ade

#3f7ade
hex#3f7ade
rgbrgb(63, 122, 222)
hslhsl(218, 71%, 56%)
oklchoklch(0.592 0.165 260.3)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2025

Colors that go with #3f7ade

Charcoal, Copper and Amber 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.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#dea43f

#3fc9de · #543fde

#de3f7a · #7ade3f

Split-complementary

Open in tool →

#de543f · #c9de3f

#de3fc9 · #dea43f · #3fde54

Contrast

#3f7ade as textRatioAAAA largeAAAFix
Aaon white
4.16:1failpassfail
  • AA: use #3673dd as the text (4.51:1)
  • AAA: use #1e53ae as the text (7.23:1)
  • AA: or shift the background to #121212 (4.5:1)
Aaon black
5.05:1passpassfail
  • AAA: use #6b98e6 as the text (7.26:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f7ade 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

#3f7ade reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f7ade
live endpoint

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.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3f7ade and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f7ade-9ca6c4-df644e-201f2d-e9f0f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md