Color

#133344

#133344
hex#133344
rgbrgb(19, 51, 68)
hslhsl(201, 56%, 17%)
oklchoklch(0.306 0.048 234.7)
Closest name: Blue Whale (#1e3442)Relative luminance 0.0292

Colors that go with #133344

Royal Blue, Rust 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.

Real palettes that use #133344

Tints & shades

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

Harmonies

Complementary

Open in tool →

#442413

#13443c · #131a44

#441333 · #334413

Split-complementary

Open in tool →

#44131a · #443c13

#3c1344 · #442413 · #1a4413

Contrast

#133344 as textRatioAAAA largeAAAFix
Aaon white
13.25:1passpasspassPasses AAA — no fix needed.
Aaon black
1.58:1failfailfail
  • AA: use #2f7da7 as the text (4.61:1)
  • AAA: use #4ca0cd as the text (7.22:1)
  • AA: or shift the background to #999999 (4.65:1)
  • AAA: or shift the background to #bdbdbd (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #133344 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#133344 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #133344
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 #133344 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/133344-9cb1c4-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