Color

#11575a

#11575a
hex#11575a
rgbrgb(17, 87, 90)
hslhsl(182, 68%, 21%)
oklchoklch(0.418 0.065 199.3)
Closest name: Abyssal Waters (#005765)Relative luminance 0.0767

Colors that go with #11575a

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 #11575a

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5a1411

#115a38 · #11335a

#5a1158 · #585a11

Split-complementary

Open in tool →

#5a1133 · #5a3811

#38115a · #5a1411 · #335a11

Contrast

#11575a as textRatioAAAA largeAAAFix
Aaon white
8.28:1passpasspassPasses AAA — no fix needed.
Aaon black
2.53:1failfailfail
  • AA: use #198185 as the text (4.52:1)
  • AAA: use #21a7ab as the text (7.18:1)
  • 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 #11575a as the background.

Brands using this color

Fonts for this mood

#11575a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #11575a
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 #11575a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/11575a-a2babe-d45990-1f272d-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