Color

#0f454d

#0f454d
hex#0f454d
rgbrgb(15, 69, 77)
hslhsl(188, 67%, 18%)
oklchoklch(0.36 0.055 209.5)
Closest name: Cold and Dark (#154250)Relative luminance 0.0489

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4d170f

#0f4d36 · #0f264d

#4d0f44 · #444d0f

Split-complementary

Open in tool →

#4d0f26 · #4d360f

#360f4d · #4d170f · #264d0f

Contrast

#0f454d as textRatioAAAA largeAAAFix
Aaon white
10.61:1passpasspassPasses AAA — no fix needed.
Aaon black
1.98:1failfailfail
  • AA: use #1d8191 as the text (4.6:1)
  • AAA: use #24a4b7 as the text (7.07:1)
  • AA: or shift the background to #ababab (4.62:1)
  • AAA: or shift the background to #d4d4d4 (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 #0f454d as the background.

Brands using this color

Fonts for this mood

#0f454d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f454d
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 #0f454d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f454d-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