Color

#00518f

#00518f
hex#00518f
rgbrgb(0, 81, 143)
hslhsl(206, 100%, 28%)
oklchoklch(0.429 0.122 250.3)
Closest name: Blue Chip (#1d5699)Relative luminance 0.0787

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8f3e00

#008f85 · #000a8f

#8f0051 · #518f00

Split-complementary

Open in tool →

#8f000a · #8f8500

#85008f · #8f3e00 · #0a8f00

Contrast

#00518f as textRatioAAAA largeAAAFix
Aaon white
8.16:1passpasspassPasses AAA — no fix needed.
Aaon black
2.57:1failfailfail
  • AA: use #0076d1 as the text (4.51:1)
  • AAA: use #1499ff as the text (7.03:1)
  • AA: or shift the background to #c2c2c2 (4.58:1)
  • AAA: or shift the background to #f0f0f0 (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 #00518f 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

#00518f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00518f
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 #00518f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00518f-9caec4-df4e56-1f212d-e9f1f1?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