Color

#1378ae

#1378ae
hex#1378ae
rgbrgb(19, 120, 174)
hslhsl(201, 80%, 38%)
oklchoklch(0.546 0.119 239.8)
Closest name: Brilliant Blue (#0075b3)Relative luminance 0.1663

Colors that go with #1378ae

Charcoal, Crimson and Sienna 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 →

#ae4a13

#13ae97 · #132bae

#ae1378 · #78ae13

Split-complementary

Open in tool →

#ae132b · #ae9713

#9713ae · #ae4a13 · #2bae13

Contrast

#1378ae as textRatioAAAA largeAAAFix
Aaon white
4.85:1passpassfail
  • AAA: use #0f5c85 as the text (7.27:1)
Aaon black
4.33:1failpassfail
  • AA: use #147bb3 as the text (4.51:1)
  • AAA: use #199ee6 as the text (7.07:1)
  • AA: or shift the background to #f7f7f7 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1378ae as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1378ae reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1378ae
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 #1378ae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1378ae-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