Color

#1399cd

#1399cd
hex#1399cd
rgbrgb(19, 153, 205)
hslhsl(197, 83%, 44%)
oklchoklch(0.642 0.128 232.3)
Closest name: Blue Burst (#309cd0)Relative luminance 0.2733

Colors that go with #1399cd

Charcoal, Amber and Cobalt 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 #1399cd

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cd4813

#13cda5 · #133bcd

#cd1399 · #99cd13

Split-complementary

Open in tool →

#cd133b · #cda513

#a513cd · #cd4813 · #3bcd13

Contrast

#1399cd as textRatioAAAA largeAAAFix
Aaon white
3.25:1failpassfail
  • AA: use #107da8 as the text (4.65:1)
  • AAA: use #0c5e7e as the text (7.2:1)
  • AA: or shift the background to #262626 (4.66:1)
Aaon black
6.47:1passpassfail
  • AAA: use #14a3db as the text (7.29:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1399cd as the background.

Brands using this color

Fonts for this mood

#1399cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1399cd
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 #1399cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1399cd-9cb4c4-df4e6b-1f232d-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