Color

#173545

#173545
hex#173545
rgbrgb(23, 53, 69)
hslhsl(201, 50%, 18%)
oklchoklch(0.314 0.046 234.1)
Closest name: Blue Whale (#1e3442)Relative luminance 0.0316

Colors that go with #173545

Royal Blue, Rust and Teal 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 #173545

Tints & shades

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

Harmonies

Complementary

Open in tool →

#452717

#17453e · #171e45

#451735 · #354517

Split-complementary

Open in tool →

#45171e · #453e17

#3e1745 · #452717 · #1e4517

Contrast

#173545 as textRatioAAAA largeAAAFix
Aaon white
12.87:1passpasspassPasses AAA — no fix needed.
Aaon black
1.63:1failfailfail
  • AA: use #367ba1 as the text (4.5:1)
  • AAA: use #539dc6 as the text (7.01:1)
  • AA: or shift the background to #999999 (4.52:1)
  • AAA: or shift the background to #c2c2c2 (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #173545 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

#173545 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #173545
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 #173545 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/173545-9cb1c4-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