Color

#150b2d

#150b2d
hex#150b2d
rgbrgb(21, 11, 45)
hslhsl(258, 61%, 11%)
oklchoklch(0.187 0.065 292.5)
Closest name: Midnight Monarch (#1c0f33)Relative luminance 0.0059

Colors that go with #150b2d

Charcoal, Dark Olive Green and Royal 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 →

#232d0b

#0b122d · #260b2d

#2d150b · #0b2d15

Split-complementary

Open in tool →

#2d260b · #122d0b

#2d0b12 · #232d0b · #0b2d26

Contrast

#150b2d as textRatioAAAA largeAAAFix
Aaon white
18.79:1passpasspassPasses AAA — no fix needed.
Aaon black
1.12:1failfailfail
  • AA: use #835fd8 as the text (4.59:1)
  • AAA: use #a388e2 as the text (7.18:1)
  • AA: or shift the background to #7d7d7d (4.56:1)
  • AAA: or shift the background to #9e9e9e (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #150b2d 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

#150b2d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #150b2d
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 #150b2d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/150b2d-ad9cc4-dfc44e-291f2d-e9ebf1?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