Color

#18243a

#18243a
hex#18243a
rgbrgb(24, 36, 58)
hslhsl(219, 41%, 16%)
oklchoklch(0.261 0.045 261.9)
Closest name: Midnight Express (#21263a)Relative luminance 0.0176

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3a2e18

#18353a · #1d183a

#3a1824 · #243a18

Split-complementary

Open in tool →

#3a1d18 · #353a18

#3a1835 · #3a2e18 · #183a1d

Contrast

#18243a as textRatioAAAA largeAAAFix
Aaon white
15.53:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #5276b7 as the text (4.63:1)
  • AAA: use #7e98c9 as the text (7.22:1)
  • AA: or shift the background to #8c8c8c (4.62:1)
  • AAA: or shift the background to #b0b0b0 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18243a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#18243a reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18243a
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 #18243a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18243a-9ca5c4-df664e-211f2d-e9f0f1?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