Color

#90a5e9

#90a5e9
hex#90a5e9
rgbrgb(144, 165, 233)
hslhsl(226, 67%, 74%)
oklchoklch(0.732 0.102 270.6)
Closest name: Cold Lips (#9ba0ef)Relative luminance 0.3872

Colors that go with #90a5e9

Charcoal, Deep Sky Blue 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 →

#e9d490

#90d1e9 · #a890e9

#e990a5 · #a5e990

Split-complementary

Open in tool →

#e9a890 · #d1e990

#e990d1 · #e9d490 · #90e9a8

Contrast

#90a5e9 as textRatioAAAA largeAAAFix
Aaon white
2.4:1failfailfail
  • AA: use #4c6edc as the text (4.59:1)
  • AAA: use #284dc8 as the text (7.03:1)
  • AA: or shift the background to #3d3d3d (4.52:1)
  • AAA: or shift the background to #1c1c1c (7.1:1)
Aaon black
8.74:1passpasspassPasses 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 #90a5e9 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

#90a5e9 reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #90a5e9
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 #90a5e9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/90a5e9-9ca1c4-df774e-221f2d-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