Color

#2b18fb

#2b18fb
hex#2b18fb
rgbrgb(43, 24, 251)
hslhsl(245, 97%, 54%)
oklchoklch(0.467 0.296 269)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0813

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e9fb18

#1877fb · #9d18fb

#fb2b18 · #18fb2b

Split-complementary

Open in tool →

#fb9d18 · #77fb18

#fb1877 · #e9fb18 · #18fb9d

Contrast

#2b18fb as textRatioAAAA largeAAAFix
Aaon white
8:1passpasspassPasses AAA — no fix needed.
Aaon black
2.63:1failfailfail
  • AA: use #6b5efd as the text (4.64:1)
  • AAA: use #9086fd as the text (7.01:1)
  • AA: or shift the background to #c4c4c4 (4.58:1)
  • AAA: or shift the background to #f0f0f0 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b18fb as the background.

Brands using this color

Fonts for this mood

#2b18fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b18fb
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 #2b18fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b18fb-a49cc4-dfa54e-261f2d-e9ecf1?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