Color

#134bb4

#134bb4
hex#134bb4
rgbrgb(19, 75, 180)
hslhsl(219, 81%, 39%)
oklchoklch(0.448 0.176 261.6)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0847

Colors that go with #134bb4

Charcoal, Crimson and Steel 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 →

#b47c13

#139cb4 · #2b13b4

#b4134b · #4bb413

Split-complementary

Open in tool →

#b42b13 · #9cb413

#b4139c · #b47c13 · #13b42b

Contrast

#134bb4 as textRatioAAAA largeAAAFix
Aaon white
7.8:1passpasspassPasses AAA — no fix needed.
Aaon black
2.69:1failfailfail
  • AA: use #2f70e9 as the text (4.62:1)
  • AAA: use #6796ef as the text (7.19:1)
  • AA: or shift the background to #c7c7c7 (4.61:1)
  • AAA: or shift the background to #f5f5f5 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #134bb4 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

#134bb4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #134bb4
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 #134bb4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/134bb4-9ca5c4-df664e-211f2d-e9f0f1?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