Color

#375a5d

#375a5d
hex#375a5d
rgbrgb(55, 90, 93)
hslhsl(185, 26%, 29%)
oklchoklch(0.442 0.041 202.7)
Closest name: Arctic Nights (#345c61)Relative luminance 0.0891

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5d3a37

#375d4d · #37475d

#5d375a · #5a5d37

Split-complementary

Open in tool →

#5d3747 · #5d4d37

#4d375d · #5d3a37 · #475d37

Contrast

#375a5d as textRatioAAAA largeAAAFix
Aaon white
7.55:1passpasspassPasses AAA — no fix needed.
Aaon black
2.78:1failfailfail
  • AA: use #4d7f84 as the text (4.68:1)
  • AAA: use #659fa4 as the text (7.05:1)
  • AA: or shift the background to #c9c9c9 (4.56:1)
  • AAA: or shift the background to #f7f7f7 (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 #375a5d 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

#375a5d reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #375a5d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #375a5d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/375a5d-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