Color

#374258

#374258
hex#374258
rgbrgb(55, 66, 88)
hslhsl(220, 23%, 28%)
oklchoklch(0.379 0.041 263.9)
Closest name: Black Turmeric (#2c4364)Relative luminance 0.0541

Tints & shades

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

Harmonies

Complementary

Open in tool →

#584d37

#375258 · #3c3758

#583742 · #425837

Split-complementary

Open in tool →

#583c37 · #525837

#583752 · #584d37 · #37583c

Contrast

#374258 as textRatioAAAA largeAAAFix
Aaon white
10.08:1passpasspassPasses AAA — no fix needed.
Aaon black
2.08:1failfailfail
  • AA: use #62769d as the text (4.6:1)
  • AAA: use #8897b4 as the text (7.13:1)
  • AA: or shift the background to #b0b0b0 (4.65:1)
  • AAA: or shift the background to #d9d9d9 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374258 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

#374258 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374258
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 #374258 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374258-9ca5c4-df694e-211f2d-e9f0f1?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