Color

#233e90

#233e90
hex#233e90
rgbrgb(35, 62, 144)
hslhsl(225, 61%, 35%)
oklchoklch(0.395 0.14 266.2)
Closest name: Cascade Twilight (#234893)Relative luminance 0.0582

Colors that go with #233e90

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 →

#907423

#237490 · #3e2390

#90233e · #3e9023

Split-complementary

Open in tool →

#903e23 · #749023

#902374 · #907423 · #23903e

Contrast

#233e90 as textRatioAAAA largeAAAFix
Aaon white
9.71:1passpasspassPasses AAA — no fix needed.
Aaon black
2.16:1failfailfail
  • AA: use #4e70d4 as the text (4.59:1)
  • AAA: use #7c95df as the text (7.22:1)
  • AA: or shift the background to #b3b3b3 (4.63:1)
  • AAA: or shift the background to #dbdbdb (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #233e90 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#233e90 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #233e90
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 #233e90 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/233e90-9ca1c4-df754e-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