Color

#3383fa

#3383fa
hex#3383fa
rgbrgb(51, 131, 250)
hslhsl(216, 95%, 59%)
oklchoklch(0.625 0.194 258.7)
Closest name: Azure (#007fff)Relative luminance 0.2384

Tints & shades

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

Harmonies

Complementary

Open in tool →

#faaa33

#33e6fa · #4733fa

#fa3383 · #83fa33

Split-complementary

Open in tool →

#fa4733 · #e6fa33

#fa33e6 · #faaa33 · #33fa47

Contrast

#3383fa as textRatioAAAA largeAAAFix
Aaon white
3.64:1failpassfail
  • AA: use #106df9 as the text (4.59:1)
  • AAA: use #0551c2 as the text (7.09:1)
  • AA: or shift the background to #1f1f1f (4.53:1)
Aaon black
5.77:1passpassfail
  • AAA: use #5195fb as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3383fa as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3383fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3383fa
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 #3383fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3383fa-9ca7c4-df5f4e-201f2d-e9f0f1?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