Color

#375b72

#375b72
hex#375b72
rgbrgb(55, 91, 114)
hslhsl(203, 35%, 33%)
oklchoklch(0.454 0.056 237.8)
Closest name: Atlantis (#336172)Relative luminance 0.0951

Colors that go with #375b72

Royal Blue, Sienna 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 #375b72

Tints & shades

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

Harmonies

Complementary

Open in tool →

#724d37

#37726b · #373e72

#72375b · #5b7237

Split-complementary

Open in tool →

#72373e · #726b37

#6b3772 · #724d37 · #3e7237

Contrast

#375b72 as textRatioAAAA largeAAAFix
Aaon white
7.24:1passpasspassPasses AAA — no fix needed.
Aaon black
2.9:1failfailfail
  • AA: use #4b7c9b as the text (4.66:1)
  • AAA: use #6e9db9 as the text (7.19:1)
  • AA: or shift the background to #cccccc (4.51:1)
  • AAA: or shift the background to #fcfcfc (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #375b72 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

#375b72 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #375b72
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 #375b72 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/375b72-9cb0c4-df4e5d-1f222d-e9f1f0?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