Color

#154b56

#154b56
hex#154b56
rgbrgb(21, 75, 86)
hslhsl(190, 61%, 21%)
oklchoklch(0.383 0.058 214.1)
Closest name: Raging Thunderstorm (#004f63)Relative luminance 0.0586

Colors that go with #154b56

Steel Blue, Teal and Rust 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 →

#562015

#155640 · #152b56

#56154b · #4b5615

Split-complementary

Open in tool →

#56152b · #564015

#401556 · #562015 · #2b5615

Contrast

#154b56 as textRatioAAAA largeAAAFix
Aaon white
9.67:1passpasspassPasses AAA — no fix needed.
Aaon black
2.17:1failfailfail
  • AA: use #248194 as the text (4.64:1)
  • AAA: use #2ea5bd as the text (7.23:1)
  • AA: or shift the background to #b3b3b3 (4.61:1)
  • AAA: or shift the background to #dedede (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #154b56 as the background.

Brands using this color

Fonts for this mood

#154b56 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #154b56
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 #154b56 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/154b56-a2b6be-df4e7c-1f252d-e9f1ef?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