Color

#23339a

#23339a
hex#23339a
rgbrgb(35, 51, 154)
hslhsl(232, 63%, 37%)
oklchoklch(0.382 0.167 269.5)
Closest name: Depths of Night (#2c319b)Relative luminance 0.0506

Colors that go with #23339a

Charcoal, Steel Blue and 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 →

#9a8a23

#236e9a · #4e239a

#9a2333 · #339a23

Split-complementary

Open in tool →

#9a4e23 · #6e9a23

#9a236e · #9a8a23 · #239a4e

Contrast

#23339a as textRatioAAAA largeAAAFix
Aaon white
10.44:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #5d6eda as the text (4.71:1)
  • AAA: use #8693e4 as the text (7.31:1)
  • AA: or shift the background to #ababab (4.55:1)
  • AAA: or shift the background to #d4d4d4 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #23339a as the background.

Brands using this color

Fonts for this mood

#23339a reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #23339a
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 #23339a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/23339a-9c9dc4-df864e-231f2d-e9eef1?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