Color

#2f4e51

#2f4e51
hex#2f4e51
rgbrgb(47, 78, 81)
hslhsl(185, 27%, 25%)
oklchoklch(0.401 0.037 203.6)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0665

Tints & shades

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

Harmonies

Complementary

Open in tool →

#51312f

#2f5143 · #2f3d51

#512f4e · #4e512f

Split-complementary

Open in tool →

#512f3d · #51432f

#432f51 · #51312f · #3d512f

Contrast

#2f4e51 as textRatioAAAA largeAAAFix
Aaon white
9.02:1passpasspassPasses AAA — no fix needed.
Aaon black
2.33:1failfailfail
  • AA: use #4a7d82 as the text (4.55:1)
  • AAA: use #64a0a6 as the text (7.12:1)
  • AA: or shift the background to #b8b8b8 (4.54:1)
  • AAA: or shift the background to #e3e3e3 (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 #2f4e51 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

#2f4e51 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f4e51
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 #2f4e51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f4e51-a2b8be-df4e88-1f262d-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