Color

#406be2

#406be2
hex#406be2
rgbrgb(64, 107, 226)
hslhsl(224, 74%, 57%)
oklchoklch(0.564 0.187 265.7)
Closest name: Royal Blue (#4169e1)Relative luminance 0.171

Colors that go with #406be2

Charcoal, Crimson and Sea Green 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 →

#e2b740

#40bde2 · #6640e2

#e2406b · #6be240

Split-complementary

Open in tool →

#e26640 · #bde240

#e240bd · #e2b740 · #40e266

Contrast

#406be2 as textRatioAAAA largeAAAFix
Aaon white
4.75:1passpassfail
  • AAA: use #1e4dcc as the text (7.03:1)
Aaon black
4.42:1failpassfail
  • AA: use #456fe3 as the text (4.64:1)
  • AAA: use #7595ea as the text (7.24:1)
  • AA: or shift the background to #fafafa (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #406be2 as the background.

Brands using this color

Fonts for this mood

#406be2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #406be2
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 #406be2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/406be2-9ca2c4-df724e-221f2d-e9eff1?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