Color

#404b59

#404b59
hex#404b59
rgbrgb(64, 75, 89)
hslhsl(214, 16%, 30%)
oklchoklch(0.409 0.028 254.6)
Closest name: Abyssal (#404c57)Relative luminance 0.0684

Tints & shades

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

Harmonies

Complementary

Open in tool →

#594e40

#405759 · #424059

#59404b · #4b5940

Split-complementary

Open in tool →

#594240 · #575940

#594057 · #594e40 · #405942

Contrast

#404b59 as textRatioAAAA largeAAAFix
Aaon white
8.87:1passpasspassPasses AAA — no fix needed.
Aaon black
2.37:1failfailfail
  • AA: use #67788e as the text (4.65:1)
  • AAA: use #8997a9 as the text (7.06:1)
  • AA: or shift the background to #bababa (4.57:1)
  • AAA: or shift the background to #e6e6e6 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404b59 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

#404b59 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #404b59
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 #404b59 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404b59-9ca9c4-df5a4e-1f1f2d-e9f0f1?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