Color

#2909dc

#2909dc
hex#2909dc
rgbrgb(41, 9, 220)
hslhsl(249, 92%, 45%)
oklchoklch(0.42 0.27 270.2)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0583

Colors that go with #2909dc

Charcoal, Cobalt Blue and Cornflower Blue 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 →

#bddc09

#0953dc · #9209dc

#dc2909 · #09dc29

Split-complementary

Open in tool →

#dc9209 · #53dc09

#dc0953 · #bddc09 · #09dc92

Contrast

#2909dc as textRatioAAAA largeAAAFix
Aaon white
9.69:1passpasspassPasses AAA — no fix needed.
Aaon black
2.17:1failfailfail
  • AA: use #755df8 as the text (4.68:1)
  • AAA: use #9685fa as the text (7.03:1)
  • AA: or shift the background to #b3b3b3 (4.62:1)
  • AAA: or shift the background to #dedede (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2909dc 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

#2909dc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2909dc
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 #2909dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2909dc-a79cc4-dfae4e-271f2d-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