Color

#2f404b

#2f404b
hex#2f404b
rgbrgb(47, 64, 75)
hslhsl(204, 23%, 24%)
oklchoklch(0.361 0.029 237)
Closest name: Arsenic (#3b444b)Relative luminance 0.0478

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4b3a2f

#2f4b48 · #2f324b

#4b2f40 · #404b2f

Split-complementary

Open in tool →

#4b2f32 · #4b482f

#482f4b · #4b3a2f · #324b2f

Contrast

#2f404b as textRatioAAAA largeAAAFix
Aaon white
10.74:1passpasspassPasses AAA — no fix needed.
Aaon black
1.96:1failfailfail
  • AA: use #5a7b90 as the text (4.67:1)
  • AAA: use #7b99ad as the text (7:1)
  • AA: or shift the background to #a8a8a8 (4.52:1)
  • AAA: or shift the background to #d1d1d1 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f404b 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

#2f404b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f404b
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 #2f404b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f404b-9cafc4-df4e5a-1f222d-e9f1f0?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