Color

#2d90d7

#2d90d7
hex#2d90d7
rgbrgb(45, 144, 215)
hslhsl(205, 68%, 51%)
oklchoklch(0.631 0.139 244.8)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2541

Colors that go with #2d90d7

Charcoal, Orange Red and Copper 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 →

#d7742d

#2dd7c9 · #2d3bd7

#d72d90 · #90d72d

Split-complementary

Open in tool →

#d72d3b · #d7c92d

#c92dd7 · #d7742d · #3bd72d

Contrast

#2d90d7 as textRatioAAAA largeAAAFix
Aaon white
3.45:1failpassfail
  • AA: use #237ab8 as the text (4.62:1)
  • AAA: use #1a5b89 as the text (7.24:1)
  • AA: or shift the background to #212121 (4.66:1)
Aaon black
6.08:1passpassfail
  • AAA: use #439cdb as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2d90d7 as the background.

Brands using this color

Fonts for this mood

#2d90d7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d90d7
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 #2d90d7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d90d7-9cafc4-df4e58-1f212d-e9f1f0?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