Color

#3374ff

#3374ff
hex#3374ff
rgbrgb(51, 116, 255)
hslhsl(221, 100%, 60%)
oklchoklch(0.599 0.218 262.8)
Closest name: Azure (#007fff)Relative luminance 0.2041

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ffbe33

#33daff · #5833ff

#ff3374 · #74ff33

Split-complementary

Open in tool →

#ff5833 · #daff33

#ff33da · #ffbe33 · #33ff58

Contrast

#3374ff as textRatioAAAA largeAAAFix
Aaon white
4.13:1failpassfail
  • AA: use #2469ff as the text (4.63:1)
  • AAA: use #0047e0 as the text (7.05:1)
  • AA: or shift the background to #121212 (4.53:1)
Aaon black
5.08:1passpassfail
  • AAA: use #6193ff as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3374ff 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

#3374ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3374ff
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 #3374ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3374ff-9ca4c4-df6b4e-211f2d-e9eff1?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