Color

#405272

#405272
hex#405272
rgbrgb(64, 82, 114)
hslhsl(218, 28%, 35%)
oklchoklch(0.437 0.058 261.6)
Closest name: Deep Indigo (#4c567a)Relative luminance 0.0834

Colors that go with #405272

Teal, Sienna and 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.

Real palettes that use #405272

Tints & shades

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

Harmonies

Complementary

Open in tool →

#726040

#406c72 · #474072

#724053 · #537240

Split-complementary

Open in tool →

#724740 · #6c7240

#72406c · #726040 · #407247

Contrast

#405272 as textRatioAAAA largeAAAFix
Aaon white
7.87:1passpasspassPasses AAA — no fix needed.
Aaon black
2.67:1failfailfail
  • AA: use #5c76a3 as the text (4.58:1)
  • AAA: use #8397b9 as the text (7.09:1)
  • AA: or shift the background to #c4c4c4 (4.51:1)
  • AAA: or shift the background to #f2f2f2 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #405272 as the background.

Brands using this color

mcpConnect your agent — build around #405272
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 #405272 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/405272-9ca6c4-df644e-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