Color

#3491ef

#3491ef
hex#3491ef
rgbrgb(52, 145, 239)
hslhsl(210, 85%, 57%)
oklchoklch(0.649 0.165 252.2)
Closest name: Fresh Blue of Bel Air (#069af3)Relative luminance 0.2721

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ef9134

#34efef · #3434ef

#ef3491 · #91ef34

Split-complementary

Open in tool →

#ef3434 · #efef34

#ef34ef · #ef9134 · #34ef34

Contrast

#3491ef as textRatioAAAA largeAAAFix
Aaon white
3.26:1failpassfail
  • AA: use #1275d9 as the text (4.59:1)
  • AAA: use #0d59a5 as the text (7.02:1)
  • AA: or shift the background to #262626 (4.64:1)
Aaon black
6.44:1passpassfail
  • AAA: use #4299f0 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3491ef 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

#3491ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3491ef
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 #3491ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3491ef-9cabc4-df514e-1f202d-e9f1f1?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