Color

#343aef

#343aef
hex#343aef
rgbrgb(52, 58, 239)
hslhsl(238, 85%, 57%)
oklchoklch(0.489 0.26 270.3)
Closest name: C64 Blue (#003aff)Relative luminance 0.0999

Tints & shades

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

Harmonies

Complementary

Open in tool →

#efe834

#3498ef · #8b34ef

#ef343a · #3aef34

Split-complementary

Open in tool →

#ef8b34 · #98ef34

#ef3498 · #efe834 · #34ef8b

Contrast

#343aef as textRatioAAAA largeAAAFix
Aaon white
7.01:1passpasspassPasses AAA — no fix needed.
Aaon black
3:1failfailfail
  • AA: use #5f64f2 as the text (4.59:1)
  • AAA: use #898df5 as the text (7.19:1)
  • AA: or shift the background to #d1d1d1 (4.59:1)
  • AAA: or shift the background to #ffffff (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #343aef 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

#343aef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #343aef
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #343aef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/343aef-9f9cc4-df944e-251f2d-e9edf1?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