Color

#334eeb

#334eeb
hex#334eeb
rgbrgb(51, 78, 235)
hslhsl(231, 82%, 56%)
oklchoklch(0.513 0.236 268.4)
Closest name: C64 Blue (#003aff)Relative luminance 0.1215

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ebcf33

#33aaeb · #7333eb

#eb334e · #4eeb33

Split-complementary

Open in tool →

#eb7333 · #aaeb33

#eb33aa · #ebcf33 · #33eb73

Contrast

#334eeb as textRatioAAAA largeAAAFix
Aaon white
6.12:1passpassfail
  • AAA: use #203ee9 as the text (7.17:1)
Aaon black
3.43:1failpassfail
  • AA: use #536aee as the text (4.66:1)
  • AAA: use #7d8ff2 as the text (7.08:1)
  • AA: or shift the background to #dedede (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #334eeb 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

#334eeb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #334eeb
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 #334eeb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/334eeb-9c9ec4-df834e-231f2d-e9eef1?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