Color

#39374e

#39374e
hex#39374e
rgbrgb(57, 55, 78)
hslhsl(245, 17%, 26%)
oklchoklch(0.349 0.04 288.1)
Closest name: Call It a Night (#42364c)Relative luminance 0.0415

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4c4e37

#37404e · #44374e

#4e3937 · #374e39

Split-complementary

Open in tool →

#4e4437 · #404e37

#4e3740 · #4c4e37 · #374e44

Contrast

#39374e as textRatioAAAA largeAAAFix
Aaon white
11.47:1passpasspassPasses AAA — no fix needed.
Aaon black
1.83:1failfailfail
  • AA: use #737099 as the text (4.51:1)
  • AAA: use #9694b3 as the text (7.18:1)
  • AA: or shift the background to #a3a3a3 (4.55:1)
  • AAA: or shift the background to #cccccc (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 #39374e 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

#39374e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #39374e
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 #39374e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/39374e-a49cc4-dfa54e-261f2d-e9ecf1?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