Color

#2901ef

#2901ef
hex#2901ef
rgbrgb(41, 1, 239)
hslhsl(250, 99%, 47%)
oklchoklch(0.441 0.291 269.3)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0673

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c7ef01

#0150ef · #9f01ef

#ef2901 · #01ef29

Split-complementary

Open in tool →

#ef9f01 · #50ef01

#ef0150 · #c7ef01 · #01ef9f

Contrast

#2901ef as textRatioAAAA largeAAAFix
Aaon white
8.96:1passpasspassPasses AAA — no fix needed.
Aaon black
2.35:1failfailfail
  • AA: use #7358fe as the text (4.56:1)
  • AAA: use #9985fe as the text (7.14:1)
  • AA: or shift the background to #b8b8b8 (4.51:1)
  • AAA: or shift the background to #e6e6e6 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2901ef 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

#2901ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2901ef
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 #2901ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2901ef-a79cc4-dfb14e-281f2d-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