Color

#00858f

#00858f
hex#00858f
rgbrgb(0, 133, 143)
hslhsl(184, 100%, 28%)
oklchoklch(0.562 0.096 204.1)
Closest name: darkcyan (#008b8b)Relative luminance 0.1876

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8f0a00

#008f51 · #003e8f

#8f0085 · #858f00

Split-complementary

Open in tool →

#8f003e · #8f5100

#51008f · #8f0a00 · #3e8f00

Contrast

#00858f as textRatioAAAA largeAAAFix
Aaon white
4.42:1failpassfail
  • AA: use #00818a as the text (4.66:1)
  • AAA: use #005f66 as the text (7.42:1)
  • AA: or shift the background to #080808 (4.53:1)
Aaon black
4.75:1passpassfail
  • AAA: use #00a7b3 as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00858f as the background.

Brands using this color

Fonts for this mood

#00858f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00858f
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 #00858f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00858f-a2b9be-df4e8a-1f262d-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