Color

#18393e

#18393e
hex#18393e
rgbrgb(24, 57, 62)
hslhsl(188, 44%, 17%)
oklchoklch(0.322 0.039 208.4)
Closest name: Royal Neptune (#1c3b42)Relative luminance 0.0347

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#3e1d18

#183e30 · #18263e

#3e1839 · #393e18

Split-complementary

Open in tool →

#3e1826 · #3e3018

#30183e · #3e1d18 · #263e18

Contrast

#18393e as textRatioAAAA largeAAAFix
Aaon white
12.4:1passpasspassPasses AAA — no fix needed.
Aaon black
1.69:1failfailfail
  • AA: use #36808c as the text (4.62:1)
  • AAA: use #45a2b0 as the text (7.05:1)
  • AA: or shift the background to #9c9c9c (4.52:1)
  • AAA: or shift the background to #c4c4c4 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18393e 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

#18393e reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18393e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #18393e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18393e-a2b7be-df4e81-1f252d-e9f1ee?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