Color

#133ebe

#133ebe
hex#133ebe
rgbrgb(19, 62, 190)
hslhsl(225, 82%, 41%)
oklchoklch(0.432 0.205 264.4)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.073

Colors that go with #133ebe

Charcoal, Sea Green 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 →

#be9313

#1393be · #3e13be

#be133e · #3ebe13

Split-complementary

Open in tool →

#be3e13 · #93be13

#be1393 · #be9313 · #13be3e

Contrast

#133ebe as textRatioAAAA largeAAAFix
Aaon white
8.54:1passpasspassPasses AAA — no fix needed.
Aaon black
2.46:1failfailfail
  • AA: use #416cec as the text (4.58:1)
  • AAA: use #7493f1 as the text (7.19:1)
  • AA: or shift the background to #bdbdbd (4.54:1)
  • AAA: or shift the background to #ebebeb (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #133ebe as the background.

Brands using this color

Fonts for this mood

#133ebe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #133ebe
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 #133ebe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/133ebe-9ca1c4-df754e-221f2d-e9eff1?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