Color

#6491dd

#6491dd
hex#6491dd
rgbrgb(100, 145, 221)
hslhsl(218, 64%, 63%)
oklchoklch(0.657 0.124 260.4)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.2818

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ddb164

#64cddd · #7464dd

#dd6491 · #91dd64

Split-complementary

Open in tool →

#dd7464 · #cddd64

#dd64cd · #ddb164 · #64dd74

Contrast

#6491dd as textRatioAAAA largeAAAFix
Aaon white
3.16:1failpassfail
  • AA: use #3a73d4 as the text (4.58:1)
  • AAA: use #2555a7 as the text (7.15:1)
  • AA: or shift the background to #292929 (4.6:1)
Aaon black
6.64:1passpassfail
  • AAA: use #6d97df as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6491dd 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

#6491dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6491dd
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 #6491dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6491dd-9ca6c4-df644e-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