Color

#129ffd

#129ffd
hex#129ffd
rgbrgb(18, 159, 253)
hslhsl(204, 98%, 53%)
oklchoklch(0.682 0.174 246.7)
Closest name: Fresh Blue of Bel Air (#069af3)Relative luminance 0.3202

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fd7012

#12fde5 · #1229fd

#fd129f · #9ffd12

Split-complementary

Open in tool →

#fd1229 · #fde512

#e512fd · #fd7012 · #29fd12

Contrast

#129ffd as textRatioAAAA largeAAAFix
Aaon white
2.84:1failfailfail
  • AA: use #027aca as the text (4.53:1)
  • AAA: use #025b97 as the text (7.13:1)
  • AA: or shift the background to #303030 (4.65:1)
  • AAA: or shift the background to #080808 (7.06:1)
Aaon black
7.4:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #129ffd as the background.

Brands using this color

Fonts for this mood

#129ffd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #129ffd
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 #129ffd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/129ffd-9cafc4-df4e5a-1f222d-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