Color

#3b6aed

#3b6aed
hex#3b6aed
rgbrgb(59, 106, 237)
hslhsl(224, 83%, 58%)
oklchoklch(0.568 0.204 265.3)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1735

Colors that go with #3b6aed

Charcoal, Crimson 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 →

#edbd3b

#3bc3ed · #643bed

#ed3b6a · #6aed3b

Split-complementary

Open in tool →

#ed643b · #c3ed3b

#ed3bc3 · #edbd3b · #3bed64

Contrast

#3b6aed as textRatioAAAA largeAAAFix
Aaon white
4.7:1passpassfail
  • AAA: use #1448d7 as the text (7.15:1)
Aaon black
4.47:1failpassfail
  • AA: use #406eed as the text (4.67:1)
  • AAA: use #7395f2 as the text (7.31:1)
  • AA: or shift the background to #fafafa (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b6aed as the background.

Brands using this color

Fonts for this mood

#3b6aed reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b6aed
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 #3b6aed and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b6aed-9ca2c4-df724e-221f2d-e9eff1?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