Color

#3d7cdb

#3d7cdb
hex#3d7cdb
rgbrgb(61, 124, 219)
hslhsl(216, 69%, 55%)
oklchoklch(0.593 0.159 258.6)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2052

Colors that go with #3d7cdb

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 →

#db9c3d

#3dccdb · #4d3ddb

#db3d7c · #7cdb3d

Split-complementary

Open in tool →

#db4d3d · #ccdb3d

#db3dcc · #db9c3d · #3ddb4d

Contrast

#3d7cdb as textRatioAAAA largeAAAFix
Aaon white
4.11:1failpassfail
  • AA: use #3074d9 as the text (4.54:1)
  • AAA: use #1f56a8 as the text (7.11:1)
  • AA: or shift the background to #121212 (4.55:1)
Aaon black
5.1:1passpassfail
  • AAA: use #6497e3 as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d7cdb 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

#3d7cdb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d7cdb
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 #3d7cdb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d7cdb-9ca7c4-df5f4e-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