Color

#3333db

#3333db
hex#3333db
rgbrgb(51, 51, 219)
hslhsl(240, 70%, 53%)
oklchoklch(0.458 0.243 271.5)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0819

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dbdb33

#3387db · #8733db

#db3333 · #33db33

Split-complementary

Open in tool →

#db8733 · #87db33

#db3387 · #dbdb33 · #33db87

Contrast

#3333db as textRatioAAAA largeAAAFix
Aaon white
7.96:1passpasspassPasses AAA — no fix needed.
Aaon black
2.64:1failfailfail
  • AA: use #6767e4 as the text (4.64:1)
  • AAA: use #8e8eeb as the text (7.22:1)
  • AA: or shift the background to #c4c4c4 (4.57:1)
  • AAA: or shift the background to #f2f2f2 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3333db 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

#3333db reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3333db
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 #3333db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3333db-a19cc4-df994e-251f2d-e9edf1?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