Color

#023a88

#023a88
hex#023a88
rgbrgb(2, 58, 136)
hslhsl(215, 97%, 27%)
oklchoklch(0.369 0.141 259.1)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0482

Colors that go with #023a88

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 →

#885002

#027d88 · #0d0288

#88023a · #3a8802

Split-complementary

Open in tool →

#880d02 · #7d8802

#88027d · #885002 · #02880d

Contrast

#023a88 as textRatioAAAA largeAAAFix
Aaon white
10.7:1passpasspassPasses AAA — no fix needed.
Aaon black
1.96:1failfailfail
  • AA: use #046bfb as the text (4.5:1)
  • AAA: use #4f97fc as the text (7.16:1)
  • AA: or shift the background to #ababab (4.66:1)
  • AAA: or shift the background to #d1d1d1 (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 #023a88 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#023a88 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #023a88
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 #023a88 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/023a88-9ca8c4-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