Color

#39bddb

#39bddb
hex#39bddb
rgbrgb(57, 189, 219)
hslhsl(191, 69%, 54%)
oklchoklch(0.741 0.118 216.7)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.4238

Tints & shades

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

Harmonies

Complementary

Open in tool →

#db5639

#39dba7 · #396cdb

#db39bd · #bddb39

Split-complementary

Open in tool →

#db396c · #dba739

#a739db · #db5639 · #6cdb39

Contrast

#39bddb as textRatioAAAA largeAAAFix
Aaon white
2.22:1failfailfail
  • AA: use #1c8097 as the text (4.58:1)
  • AAA: use #155f70 as the text (7.23:1)
  • AA: or shift the background to #424242 (4.53:1)
  • AAA: or shift the background to #242424 (7:1)
Aaon black
9.48:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #39bddb 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

#39bddb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #39bddb
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 #39bddb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/39bddb-a2b6be-df4e7a-1f252d-e9f1ef?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