Color

#28429a

#28429a
hex#28429a
rgbrgb(40, 66, 154)
hslhsl(226, 59%, 38%)
oklchoklch(0.414 0.147 267.2)
Closest name: Cascade Twilight (#234893)Relative luminance 0.0668

Colors that go with #28429a

Charcoal, Sea Green and Steel Blue 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 →

#9a7f28

#287c9a · #46289a

#9a2842 · #429a28

Split-complementary

Open in tool →

#9a4628 · #7c9a28

#9a287c · #9a7f28 · #289a46

Contrast

#28429a as textRatioAAAA largeAAAFix
Aaon white
8.99:1passpasspassPasses AAA — no fix needed.
Aaon black
2.34:1failfailfail
  • AA: use #516fd2 as the text (4.55:1)
  • AAA: use #7d94de as the text (7.16:1)
  • AA: or shift the background to #b8b8b8 (4.53:1)
  • AAA: or shift the background to #e3e3e3 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28429a as the background.

Brands using this color

Fonts for this mood

#28429a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28429a
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 #28429a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28429a-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