Color

#373c4e

#373c4e
hex#373c4e
rgbrgb(55, 60, 78)
hslhsl(227, 17%, 26%)
oklchoklch(0.359 0.032 272.6)
Closest name: Call It a Night (#42364c)Relative luminance 0.0459

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e4937

#37474e · #3d374e

#4e373c · #3c4e37

Split-complementary

Open in tool →

#4e3d37 · #474e37

#4e3747 · #4e4937 · #374e3d

Contrast

#373c4e as textRatioAAAA largeAAAFix
Aaon white
10.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.92:1failfailfail
  • AA: use #6d7697 as the text (4.69:1)
  • AAA: use #8e95af as the text (7.07:1)
  • AA: or shift the background to #a8a8a8 (4.6:1)
  • AAA: or shift the background to #cfcfcf (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #373c4e 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

#373c4e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #373c4e
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 #373c4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/373c4e-9ca0c4-df7a4e-221f2d-e9eff1?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