Color

#2b03dd

#2b03dd
hex#2b03dd
rgbrgb(43, 3, 221)
hslhsl(251, 97%, 44%)
oklchoklch(0.42 0.272 270.7)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.058

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b5dd03

#0348dd · #9803dd

#dd2b03 · #03dd2b

Split-complementary

Open in tool →

#dd9803 · #48dd03

#dd0348 · #b5dd03 · #03dd98

Contrast

#2b03dd as textRatioAAAA largeAAAFix
Aaon white
9.72:1passpasspassPasses AAA — no fix needed.
Aaon black
2.16:1failfailfail
  • AA: use #7759fc as the text (4.62:1)
  • AAA: use #9c86fd as the text (7.24:1)
  • AA: or shift the background to #b3b3b3 (4.64:1)
  • AAA: or shift the background to #dbdbdb (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 #2b03dd 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

#2b03dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b03dd
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 #2b03dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b03dd-a89cc4-dfb34e-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