Color

#404254

#404254
hex#404254
rgbrgb(64, 66, 84)
hslhsl(234, 14%, 29%)
oklchoklch(0.385 0.031 279.9)
Closest name: Arsenic (#3b444b)Relative luminance 0.0563

Tints & shades

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

Harmonies

Complementary

Open in tool →

#545240

#404c54 · #484054

#544042 · #425440

Split-complementary

Open in tool →

#544840 · #4c5440

#54404c · #545240 · #405448

Contrast

#404254 as textRatioAAAA largeAAAFix
Aaon white
9.88:1passpasspassPasses AAA — no fix needed.
Aaon black
2.13:1failfailfail
  • AA: use #717494 as the text (4.63:1)
  • AAA: use #9396ae as the text (7.21:1)
  • AA: or shift the background to #b0b0b0 (4.56:1)
  • AAA: or shift the background to #d9d9d9 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404254 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

#404254 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #404254
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 #404254 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404254-9d9cc4-df8a4e-241f2d-e9eef1?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