Color

#234efb

#234efb
hex#234efb
rgbrgb(35, 78, 251)
hslhsl(228, 96%, 56%)
oklchoklch(0.523 0.258 265.7)
Closest name: C64 Blue (#003aff)Relative luminance 0.1277

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbcf23

#23bafb · #6423fb

#fb234e · #4efb23

Split-complementary

Open in tool →

#fb6423 · #bafb23

#fb23ba · #fbcf23 · #23fb64

Contrast

#234efb as textRatioAAAA largeAAAFix
Aaon white
5.91:1passpassfail
Aaon black
3.55:1failpassfail
  • AA: use #4166fb as the text (4.52:1)
  • AAA: use #738efc as the text (7:1)
  • AA: or shift the background to #e3e3e3 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #234efb as the background.

Brands using this color

Fonts for this mood

#234efb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #234efb
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 #234efb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/234efb-9c9fc4-df7c4e-231f2d-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