Color

#153e89

#153e89
hex#153e89
rgbrgb(21, 62, 137)
hslhsl(219, 73%, 31%)
oklchoklch(0.384 0.134 261.2)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0541

Colors that go with #153e89

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 →

#896015

#157789 · #271589

#89153e · #3e8915

Split-complementary

Open in tool →

#892715 · #778915

#891577 · #896015 · #158927

Contrast

#153e89 as textRatioAAAA largeAAAFix
Aaon white
10.09:1passpasspassPasses AAA — no fix needed.
Aaon black
2.08:1failfailfail
  • AA: use #3470df as the text (4.53:1)
  • AAA: use #6995e8 as the text (7.06:1)
  • AA: or shift the background to #b0b0b0 (4.65:1)
  • AAA: or shift the background to #d9d9d9 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #153e89 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#153e89 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #153e89
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 #153e89 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/153e89-9ca5c4-df664e-211f2d-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