Color

#023378

#023378
hex#023378
rgbrgb(2, 51, 120)
hslhsl(215, 97%, 24%)
oklchoklch(0.339 0.128 258.9)
Closest name: Below the Surface (#0a2f7c)Relative luminance 0.0374

Colors that go with #023378

Charcoal, Crimson 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 →

#794702

#026f79 · #0c0279

#790233 · #337902

Split-complementary

Open in tool →

#790c02 · #6f7902

#79026f · #794702 · #02790c

Contrast

#023378 as textRatioAAAA largeAAAFix
Aaon white
12.02:1passpasspassPasses AAA — no fix needed.
Aaon black
1.75:1failfailfail
  • AA: use #046bfb as the text (4.5:1)
  • AAA: use #4f97fc as the text (7.16:1)
  • AA: or shift the background to #a1a1a1 (4.65:1)
  • AAA: or shift the background to #c7c7c7 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #023378 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#023378 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #023378
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 #023378 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/023378-9ca8c4-df5d4e-201f2d-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