Color

#172a30

#172a30
hex#172a30
rgbrgb(23, 42, 48)
hslhsl(194, 35%, 14%)
oklchoklch(0.271 0.027 220)
Closest name: Black Box (#0f282f)Relative luminance 0.0205

Colors that go with #172a30

Charcoal, Amber and 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 →

#301d17

#17302a · #171e30

#30172a · #2a3017

Split-complementary

Open in tool →

#30171e · #302a17

#2a1730 · #301d17 · #1e3017

Contrast

#172a30 as textRatioAAAA largeAAAFix
Aaon white
14.89:1passpasspassPasses AAA — no fix needed.
Aaon black
1.41:1failfailfail
  • AA: use #447c8d as the text (4.51:1)
  • AAA: use #61a0b3 as the text (7.19:1)
  • AA: or shift the background to #8f8f8f (4.6:1)
  • AAA: or shift the background to #b3b3b3 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #172a30 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#172a30 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #172a30
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 #172a30 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/172a30-9cb6c4-df4e72-1f242d-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