Color

#91b9fd

#91b9fd
hex#91b9fd
rgbrgb(145, 185, 253)
hslhsl(218, 96%, 78%)
oklchoklch(0.783 0.107 260.7)
Closest name: Electric Eel (#88bbee)Relative luminance 0.4781

Colors that go with #91b9fd

Charcoal, Dark Orange and Goldenrod 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 →

#fdd591

#91eefd · #9f91fd

#fd91b9 · #b9fd91

Split-complementary

Open in tool →

#fd9f91 · #eefd91

#fd91ee · #fdd591 · #91fd9f

Contrast

#91b9fd as textRatioAAAA largeAAAFix
Aaon white
1.99:1failfailfail
  • AA: use #196cfa as the text (4.6:1)
  • AAA: use #044ecd as the text (7.06:1)
  • AA: or shift the background to #474747 (4.67:1)
  • AAA: or shift the background to #2b2b2b (7.12:1)
Aaon black
10.56:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #91b9fd as the background.

Brands using this color

Fonts for this mood

#91b9fd reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #91b9fd
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 #91b9fd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/91b9fd-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