Color

#128fa5

#128fa5
hex#128fa5
rgbrgb(18, 143, 165)
hslhsl(189, 80%, 36%)
oklchoklch(0.599 0.102 214.1)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2249

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a52812

#12a572 · #1246a5

#a5128f · #8fa512

Split-complementary

Open in tool →

#a51246 · #a57212

#7212a5 · #a52812 · #46a512

Contrast

#128fa5 as textRatioAAAA largeAAAFix
Aaon white
3.82:1failpassfail
  • AA: use #107f93 as the text (4.69:1)
  • AAA: use #0c5f6e as the text (7.3:1)
  • AA: or shift the background to #1a1a1a (4.56:1)
Aaon black
5.5:1passpassfail
  • AAA: use #15a7c1 as the text (7.33:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #128fa5 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#128fa5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #128fa5
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 #128fa5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/128fa5-a2b7be-df4e7e-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