Color

#334f52

#334f52
hex#334f52
rgbrgb(51, 79, 82)
hslhsl(186, 23%, 26%)
oklchoklch(0.407 0.034 204.4)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.069

Tints & shades

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

Harmonies

Complementary

Open in tool →

#523633

#335245 · #333f52

#52334e · #4e5233

Split-complementary

Open in tool →

#52333f · #524533

#453352 · #523633 · #3f5233

Contrast

#334f52 as textRatioAAAA largeAAAFix
Aaon white
8.82:1passpasspassPasses AAA — no fix needed.
Aaon black
2.38:1failfailfail
  • AA: use #517c81 as the text (4.55:1)
  • AAA: use #6f9fa5 as the text (7.18:1)
  • AA: or shift the background to #bababa (4.54:1)
  • AAA: or shift the background to #e6e6e6 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #334f52 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

#334f52 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #334f52
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 #334f52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/334f52-a2b8be-df4e86-1f262d-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