Color

#135758

#135758
hex#135758
rgbrgb(19, 87, 88)
hslhsl(181, 64%, 21%)
oklchoklch(0.417 0.064 196.5)
Closest name: Cape Verde (#01554f)Relative luminance 0.0766

Colors that go with #135758

Crimson, Blue and Cadet 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.

Real palettes that use #135758

Tints & shades

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

Harmonies

Complementary

Open in tool →

#581413

#135837 · #133458

#581357 · #575813

Split-complementary

Open in tool →

#581334 · #583713

#371358 · #581413 · #345813

Contrast

#135758 as textRatioAAAA largeAAAFix
Aaon white
8.29:1passpasspassPasses AAA — no fix needed.
Aaon black
2.53:1failfailfail
  • AA: use #1d8486 as the text (4.7:1)
  • AAA: use #25a5a7 as the text (7.02:1)
  • AA: or shift the background to #bfbfbf (4.51:1)
  • AAA: or shift the background to #ededed (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #135758 as the background.

Brands using this color

Fonts for this mood

#135758 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #135758
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 #135758 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/135758-a2babe-d45992-1f272d-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