Color

#345151

#345151
hex#345151
rgbrgb(52, 81, 81)
hslhsl(180, 22%, 26%)
oklchoklch(0.412 0.035 195.9)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0721

Tints & shades

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

Harmonies

Complementary

Open in tool →

#513434

#345142 · #344251

#513451 · #515134

Split-complementary

Open in tool →

#513442 · #514234

#423451 · #513434 · #425134

Contrast

#345151 as textRatioAAAA largeAAAFix
Aaon white
8.6:1passpasspassPasses AAA — no fix needed.
Aaon black
2.44:1failfailfail
  • AA: use #507c7c as the text (4.52:1)
  • AAA: use #6aa0a0 as the text (7.15:1)
  • AA: or shift the background to #bdbdbd (4.58:1)
  • AAA: or shift the background to #e8e8e8 (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 #345151 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

#345151 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #345151
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 #345151 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/345151-a2bbbe-d45994-1f272d-e9f1ed?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