Color

#404a54

#404a54
hex#404a54
rgbrgb(64, 74, 84)
hslhsl(210, 14%, 29%)
oklchoklch(0.404 0.021 248.4)
Closest name: Abyssal (#404c57)Relative luminance 0.0663

Tints & shades

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

Harmonies

Complementary

Open in tool →

#544a40

#405454 · #404054

#54404a · #4a5440

Split-complementary

Open in tool →

#544040 · #545440

#544054 · #544a40 · #405440

Contrast

#404a54 as textRatioAAAA largeAAAFix
Aaon white
9.03:1passpasspassPasses AAA — no fix needed.
Aaon black
2.33:1failfailfail
  • AA: use #677889 as the text (4.62:1)
  • AAA: use #8b99a7 as the text (7.21:1)
  • AA: or shift the background to #b8b8b8 (4.55:1)
  • AAA: or shift the background to #e3e3e3 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404a54 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

#404a54 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #404a54
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 #404a54 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404a54-9cabc4-df514e-1f202d-e9f1f1?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