Color

#23404d

#23404d
hex#23404d
rgbrgb(35, 64, 77)
hslhsl(199, 37%, 22%)
oklchoklch(0.355 0.042 228.6)
Closest name: Cold and Dark (#154250)Relative luminance 0.0456

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4d3023

#234d45 · #232b4d

#4d2340 · #404d23

Split-complementary

Open in tool →

#4d232b · #4d4523

#45234d · #4d3023 · #2b4d23

Contrast

#23404d as textRatioAAAA largeAAAFix
Aaon white
10.98:1passpasspassPasses AAA — no fix needed.
Aaon black
1.91:1failfailfail
  • AA: use #457d96 as the text (4.63:1)
  • AAA: use #659eb8 as the text (7.14:1)
  • AA: or shift the background to #a6a6a6 (4.51:1)
  • AAA: or shift the background to #cfcfcf (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #23404d 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

#23404d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #23404d
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 #23404d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/23404d-9cb3c4-df4e66-1f232d-e9f1f0?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