Color

#2d5bb9

#2d5bb9
hex#2d5bb9
rgbrgb(45, 91, 185)
hslhsl(220, 61%, 45%)
oklchoklch(0.493 0.157 262.5)
Closest name: Denim (#1560bd)Relative luminance 0.1154

Colors that go with #2d5bb9

Charcoal, Sea Green and Sienna 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 →

#b98a2d

#2da1b9 · #442db9

#b92d5b · #5bb92d

Split-complementary

Open in tool →

#b9442d · #a1b92d

#b92da1 · #b98a2d · #2db944

Contrast

#2d5bb9 as textRatioAAAA largeAAAFix
Aaon white
6.35:1passpassfail
  • AAA: use #2a55ac as the text (7.02:1)
Aaon black
3.31:1failpassfail
  • AA: use #4272d1 as the text (4.56:1)
  • AAA: use #7397dd as the text (7.2:1)
  • AA: or shift the background to #dbdbdb (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2d5bb9 as the background.

Brands using this color

Fonts for this mood

#2d5bb9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d5bb9
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 #2d5bb9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d5bb9-9ca5c4-df694e-211f2d-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