Color

#3c87af

#3c87af
hex#3c87af
rgbrgb(60, 135, 175)
hslhsl(201, 49%, 46%)
oklchoklch(0.593 0.096 235)
Closest name: steelblue (#4682b4)Relative luminance 0.2138

Colors that go with #3c87af

Charcoal, Copper and Royal Blue 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.

Real palettes that use #3c87af

Tints & shades

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

Harmonies

Complementary

Open in tool →

#af643c

#3caf9e · #3c4daf

#af3c87 · #87af3c

Split-complementary

Open in tool →

#af3c4d · #af9e3c

#9e3caf · #af643c · #4daf3c

Contrast

#3c87af as textRatioAAAA largeAAAFix
Aaon white
3.98:1failpassfail
  • AA: use #377ba0 as the text (4.66:1)
  • AAA: use #2a5e7a as the text (7.05:1)
  • AA: or shift the background to #171717 (4.5:1)
Aaon black
5.28:1passpassfail
  • AAA: use #589fc6 as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c87af as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#3c87af reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3c87af
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 #3c87af and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c87af-9cb1c4-df4e62-1f222d-e9f1f0?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