Color

#90b3ee

#90b3ee
hex#90b3ee
rgbrgb(144, 179, 238)
hslhsl(218, 73%, 75%)
oklchoklch(0.763 0.094 260.6)
Closest name: Electric Eel (#88bbee)Relative luminance 0.4434

Colors that go with #90b3ee

Charcoal, Goldenrod and Amber 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 →

#eecc91

#91e1ee · #9d91ee

#ee91b3 · #b3ee91

Split-complementary

Open in tool →

#ee9d91 · #e1ee91

#ee91e1 · #eecc91 · #91ee9d

Contrast

#90b3ee as textRatioAAAA largeAAAFix
Aaon white
2.13:1failfailfail
  • AA: use #3473df as the text (4.5:1)
  • AAA: use #1c54b5 as the text (7.04:1)
  • AA: or shift the background to #454545 (4.51:1)
  • AAA: or shift the background to #262626 (7.11:1)
Aaon black
9.87:1passpasspassPasses 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 #90b3ee as the background.

Brands using this color

Fonts for this mood

#90b3ee reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #90b3ee
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 #90b3ee and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/90b3ee-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