Color

#404abf

#404abf
hex#404abf
rgbrgb(64, 74, 191)
hslhsl(235, 50%, 50%)
oklchoklch(0.474 0.181 273.5)
Closest name: Blurple (#5539cc)Relative luminance 0.0975

Colors that go with #404abf

Charcoal, Sea Green and Steel 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 →

#bfb540

#408abf · #7540bf

#bf404a · #4abf40

Split-complementary

Open in tool →

#bf7540 · #8abf40

#bf408a · #bfb540 · #40bf75

Contrast

#404abf as textRatioAAAA largeAAAFix
Aaon white
7.12:1passpasspassPasses AAA — no fix needed.
Aaon black
2.95:1failfailfail
  • AA: use #666fcc as the text (4.71:1)
  • AAA: use #8c93d9 as the text (7.29:1)
  • AA: or shift the background to #cfcfcf (4.57:1)
  • AAA: or shift the background to #ffffff (7.12:1)

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

#404abf reads as cool, modern. The font library is tagged with the same vocabulary:

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

tool url/palettes/new/404abf-9e9cc4-df8d4e-241f2d-e9eef1?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