Color

#2a3cdf

#2a3cdf
hex#2a3cdf
rgbrgb(42, 60, 223)
hslhsl(234, 74%, 52%)
oklchoklch(0.47 0.242 268.6)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0905

Colors that go with #2a3cdf

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 →

#dfcd2a

#2a97df · #722adf

#df2a3c · #3cdf2a

Split-complementary

Open in tool →

#df722a · #97df2a

#df2a97 · #dfcd2a · #2adf72

Contrast

#2a3cdf as textRatioAAAA largeAAAFix
Aaon white
7.47:1passpasspassPasses AAA — no fix needed.
Aaon black
2.81:1failfailfail
  • AA: use #5b69e6 as the text (4.61:1)
  • AAA: use #8791ed as the text (7.3:1)
  • AA: or shift the background to #c9c9c9 (4.51:1)
  • AAA: or shift the background to #fafafa (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a3cdf 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

#2a3cdf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a3cdf
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 #2a3cdf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a3cdf-9d9cc4-df8a4e-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