Color

#315359

#315359
hex#315359
rgbrgb(49, 83, 89)
hslhsl(189, 29%, 27%)
oklchoklch(0.419 0.041 209.9)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0756

Colors that go with #315359

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 →

#593731

#31594b · #313f59

#593153 · #535931

Split-complementary

Open in tool →

#59313f · #594b31

#4b3159 · #593731 · #3f5931

Contrast

#315359 as textRatioAAAA largeAAAFix
Aaon white
8.36:1passpasspassPasses AAA — no fix needed.
Aaon black
2.51:1failfailfail
  • AA: use #4a7e87 as the text (4.63:1)
  • AAA: use #649faa as the text (7.08:1)
  • AA: or shift the background to #bfbfbf (4.55:1)
  • AAA: or shift the background to #ebebeb (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #315359 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

#315359 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #315359
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 #315359 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/315359-a2b7be-df4e7e-1f252d-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