Color

#15423e

#15423e
hex#15423e
rgbrgb(21, 66, 62)
hslhsl(175, 52%, 17%)
oklchoklch(0.347 0.049 187)
Closest name: Botanical Night (#12403c)Relative luminance 0.044

Colors that go with #15423e

Crimson, Sea Green and Teal 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 →

#421519

#154228 · #152f42

#3e1542 · #423e15

Split-complementary

Open in tool →

#42152f · #422815

#281542 · #421519 · #2f4215

Contrast

#15423e as textRatioAAAA largeAAAFix
Aaon white
11.17:1passpasspassPasses AAA — no fix needed.
Aaon black
1.88:1failfailfail
  • AA: use #2a847c as the text (4.69:1)
  • AAA: use #35a79d as the text (7.17:1)
  • AA: or shift the background to #a6a6a6 (4.59:1)
  • AAA: or shift the background to #cfcfcf (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15423e as the background.

Brands using this color

Fonts for this mood

#15423e reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #15423e
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 #15423e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15423e-a2bdbe-d4599f-1f282d-e9f1ed?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