Color

#3c87cd

#3c87cd
hex#3c87cd
rgbrgb(60, 135, 205)
hslhsl(209, 59%, 52%)
oklchoklch(0.609 0.13 249.5)
Closest name: Blue Jay (#5588dd)Relative luminance 0.227

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cd823c

#3ccdca · #3c3fcd

#cd3c87 · #87cd3c

Split-complementary

Open in tool →

#cd3c3f · #cdca3c

#ca3ccd · #cd823c · #3fcd3c

Contrast

#3c87cd as textRatioAAAA largeAAAFix
Aaon white
3.79:1failpassfail
  • AA: use #3078bb as the text (4.64:1)
  • AAA: use #255b8e as the text (7.08:1)
  • AA: or shift the background to #1a1a1a (4.59:1)
Aaon black
5.54:1passpassfail
  • AAA: use #5d9bd5 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c87cd 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

#3c87cd reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3c87cd
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #3c87cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c87cd-9cacc4-df4e4e-1f212d-e9f1f1?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