Color

#173d45

#173d45
hex#173d45
rgbrgb(23, 61, 69)
hslhsl(190, 50%, 18%)
oklchoklch(0.336 0.045 213.6)
Closest name: Sunken Harbour (#1c3d44)Relative luminance 0.0395

Colors that go with #173d45

Steel Blue, Teal and Rust 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 →

#451f17

#174536 · #172645

#45173d · #3d4517

Split-complementary

Open in tool →

#451726 · #453617

#361745 · #451f17 · #264517

Contrast

#173d45 as textRatioAAAA largeAAAFix
Aaon white
11.73:1passpasspassPasses AAA — no fix needed.
Aaon black
1.79:1failfailfail
  • AA: use #308191 as the text (4.67:1)
  • AAA: use #3da3b8 as the text (7.13:1)
  • AA: or shift the background to #a1a1a1 (4.54:1)
  • AAA: or shift the background to #c9c9c9 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #173d45 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

#173d45 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #173d45
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 #173d45 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/173d45-a2b6be-df4e7c-1f252d-e9f1ef?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