Color

#3c8cb4

#3c8cb4
hex#3c8cb4
rgbrgb(60, 140, 180)
hslhsl(200, 50%, 47%)
oklchoklch(0.608 0.098 233.5)
Closest name: steelblue (#4682b4)Relative luminance 0.2301

Colors that go with #3c8cb4

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b4643c

#3cb4a0 · #3c50b4

#b43c8c · #8cb43c

Split-complementary

Open in tool →

#b43c50 · #b4a03c

#a03cb4 · #b4643c · #50b43c

Contrast

#3c8cb4 as textRatioAAAA largeAAAFix
Aaon white
3.75:1failpassfail
  • AA: use #367da1 as the text (4.56:1)
  • AAA: use #285c77 as the text (7.27:1)
  • AA: or shift the background to #1c1c1c (4.55:1)
Aaon black
5.6:1passpassfail
  • AAA: use #539fc6 as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c8cb4 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

#3c8cb4 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3c8cb4
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 #3c8cb4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c8cb4-9cb2c4-df4e64-1f232d-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