Color

#40526d

#40526d
hex#40526d
rgbrgb(64, 82, 109)
hslhsl(216, 26%, 34%)
oklchoklch(0.435 0.05 258.3)
Closest name: Deep Indigo (#4c567a)Relative luminance 0.0823

Colors that go with #40526d

Sienna, Blue and Cadet Blue 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6d5b40

#40696d · #45406d

#6d4052 · #526d40

Split-complementary

Open in tool →

#6d4540 · #696d40

#6d4069 · #6d5b40 · #406d45

Contrast

#40526d as textRatioAAAA largeAAAFix
Aaon white
7.94:1passpasspassPasses AAA — no fix needed.
Aaon black
2.65:1failfailfail
  • AA: use #5c769d as the text (4.53:1)
  • AAA: use #8599b7 as the text (7.24:1)
  • AA: or shift the background to #c4c4c4 (4.55:1)
  • AAA: or shift the background to #f2f2f2 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40526d as the background.

Brands using this color

mcpConnect your agent — build around #40526d
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 #40526d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40526d-9ca7c4-df5f4e-201f2d-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