Color

#315154

#315154
hex#315154
rgbrgb(49, 81, 84)
hslhsl(185, 26%, 26%)
oklchoklch(0.411 0.038 203.4)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0718

Colors that go with #315154

Teal, Sienna 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 →

#543431

#315445 · #313f54

#543151 · #515431

Split-complementary

Open in tool →

#54313f · #544531

#453154 · #543431 · #3f5431

Contrast

#315154 as textRatioAAAA largeAAAFix
Aaon white
8.62:1passpasspassPasses AAA — no fix needed.
Aaon black
2.44:1failfailfail
  • AA: use #4d7f84 as the text (4.68:1)
  • AAA: use #659fa4 as the text (7.05:1)
  • AA: or shift the background to #bdbdbd (4.59:1)
  • AAA: or shift the background to #e8e8e8 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #315154 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

#315154 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #315154
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 #315154 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/315154-a2b8be-df4e88-1f262d-e9f1ee?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