Color

#15423c

#15423c
hex#15423c
rgbrgb(21, 66, 60)
hslhsl(172, 52%, 17%)
oklchoklch(0.346 0.05 183.1)
Closest name: Botanical Night (#12403c)Relative luminance 0.0438

Colors that go with #15423c

Sea Green, Teal and Amber 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 →

#42151b

#154225 · #153142

#3c1542 · #423c15

Split-complementary

Open in tool →

#421531 · #422515

#251542 · #42151b · #314215

Contrast

#15423c as textRatioAAAA largeAAAFix
Aaon white
11.19:1passpasspassPasses AAA — no fix needed.
Aaon black
1.88:1failfailfail
  • AA: use #2a8478 as the text (4.67:1)
  • AAA: use #35a797 as the text (7.13:1)
  • AA: or shift the background to #a6a6a6 (4.6:1)
  • AAA: or shift the background to #cfcfcf (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 #15423c as the background.

Brands using this color

Palettes built around it

Fonts for this mood

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

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

tool url/palettes/new/15423c-a2bebe-d459a5-1f292d-e9f1ec?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