Color

#018bcb

#018bcb
hex#018bcb
rgbrgb(1, 139, 203)
hslhsl(199, 99%, 40%)
oklchoklch(0.606 0.138 239.5)
Closest name: steelblue (#4682b4)Relative luminance 0.2278

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cb4101

#01cba6 · #0126cb

#cb018b · #8bcb01

Split-complementary

Open in tool →

#cb0126 · #cba601

#a601cb · #cb4101 · #26cb01

Contrast

#018bcb as textRatioAAAA largeAAAFix
Aaon white
3.78:1failpassfail
  • AA: use #017db7 as the text (4.55:1)
  • AAA: use #015e89 as the text (7.09:1)
  • AA: or shift the background to #1c1c1c (4.51:1)
Aaon black
5.56:1passpassfail
  • AAA: use #01a0e9 as the text (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #018bcb 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

#018bcb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #018bcb
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 #018bcb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/018bcb-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