Color

#133d86

#133d86
hex#133d86
rgbrgb(19, 61, 134)
hslhsl(218, 75%, 30%)
oklchoklch(0.378 0.131 260.7)
Closest name: Deep Space Royal (#223382)Relative luminance 0.052

Colors that go with #133d86

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 →

#865c13

#137786 · #221386

#86133d · #3d8613

Split-complementary

Open in tool →

#862213 · #778613

#861377 · #865c13 · #138622

Contrast

#133d86 as textRatioAAAA largeAAAFix
Aaon white
10.3:1passpasspassPasses AAA — no fix needed.
Aaon black
2.04:1failfailfail
  • AA: use #3272e2 as the text (4.64:1)
  • AAA: use #6797e9 as the text (7.18:1)
  • AA: or shift the background to #adadad (4.59:1)
  • AAA: or shift the background to #d6d6d6 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #133d86 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#133d86 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #133d86
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 #133d86 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/133d86-9ca6c4-df644e-201f2d-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