Color

#173a38

#173a38
hex#173a38
rgbrgb(23, 58, 56)
hslhsl(177, 43%, 16%)
oklchoklch(0.322 0.041 190.3)
Closest name: Royal Neptune (#1c3b42)Relative luminance 0.0349

Colors that go with #173a38

Crimson, Sea Green 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3a1719

#173a27 · #172b3a

#39173a · #3a3917

Split-complementary

Open in tool →

#3a172b · #3a2717

#27173a · #3a1719 · #2b3a17

Contrast

#173a38 as textRatioAAAA largeAAAFix
Aaon white
12.36:1passpasspassPasses AAA — no fix needed.
Aaon black
1.7:1failfailfail
  • AA: use #33807c as the text (4.52:1)
  • AAA: use #41a49f as the text (7.04:1)
  • AA: or shift the background to #9c9c9c (4.5:1)
  • AAA: or shift the background to #c4c4c4 (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 #173a38 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#173a38 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #173a38
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 #173a38 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/173a38-a2bcbe-d4599b-1f282d-e9f1ed?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