Color

#6b91eb

#6b91eb
hex#6b91eb
rgbrgb(107, 145, 235)
hslhsl(222, 76%, 67%)
oklchoklch(0.669 0.141 265.5)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.2937

Colors that go with #6b91eb

Charcoal, Amber and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ebc46b

#6bd1eb · #846beb

#eb6b91 · #91eb6b

Split-complementary

Open in tool →

#eb846b · #d1eb6b

#eb6bd1 · #ebc46b · #6beb84

Contrast

#6b91eb as textRatioAAAA largeAAAFix
Aaon white
3.05:1failpassfail
  • AA: use #3e70e5 as the text (4.51:1)
  • AAA: use #1b4ec5 as the text (7.14:1)
  • AA: or shift the background to #2b2b2b (4.64:1)
Aaon black
6.87:1passpassfail
  • AAA: use #6f95eb as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6b91eb 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

#6b91eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6b91eb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #6b91eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6b91eb-9ca3c4-df6e4e-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