Color

#405159

#405159
hex#405159
rgbrgb(64, 81, 89)
hslhsl(199, 16%, 30%)
oklchoklch(0.424 0.025 228.2)
Closest name: Abyssal (#404c57)Relative luminance 0.077

Colors that go with #405159

Cadet Blue, Copper and Goldenrod lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #405159

Tints & shades

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

Harmonies

Complementary

Open in tool →

#594840

#405954 · #404559

#594051 · #515940

Split-complementary

Open in tool →

#594045 · #595440

#544059 · #594840 · #455940

Contrast

#405159 as textRatioAAAA largeAAAFix
Aaon white
8.27:1passpasspassPasses AAA — no fix needed.
Aaon black
2.54:1failfailfail
  • AA: use #607985 as the text (4.57:1)
  • AAA: use #839aa5 as the text (7.13:1)
  • AA: or shift the background to #c2c2c2 (4.64:1)
  • AAA: or shift the background to #ededed (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #405159 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

#405159 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #405159
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #405159 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/405159-9cb3c4-df4e66-1f232d-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