Color

#556be7

#556be7
hex#556be7
rgbrgb(85, 107, 231)
hslhsl(231, 75%, 62%)
oklchoklch(0.578 0.188 271.7)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1822

Colors that go with #556be7

Charcoal, Sea Green and Amber 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 →

#e7d155

#55b4e7 · #8855e7

#e7556b · #6be755

Split-complementary

Open in tool →

#e78855 · #b4e755

#e755b4 · #e7d155 · #55e788

Contrast

#556be7 as textRatioAAAA largeAAAFix
Aaon white
4.52:1passpassfail
  • AAA: use #2944e0 as the text (7.01:1)
Aaon black
4.64:1passpassfail
  • AAA: use #8292ed as the text (7.28:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #556be7 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

#556be7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #556be7
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 #556be7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/556be7-9c9ec4-df834e-231f2d-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