Color

#124fd3

#124fd3
hex#124fd3
rgbrgb(18, 79, 211)
hslhsl(221, 84%, 45%)
oklchoklch(0.483 0.212 262.7)
Closest name: Denim (#2243b6)Relative luminance 0.1042

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d39612

#12b0d3 · #3612d3

#d3124f · #4fd312

Split-complementary

Open in tool →

#d33612 · #b0d312

#d312b0 · #d39612 · #12d336

Contrast

#124fd3 as textRatioAAAA largeAAAFix
Aaon white
6.81:1passpassfail
  • AAA: use #124cca as the text (7.21:1)
Aaon black
3.08:1failpassfail
  • AA: use #3570ed as the text (4.69:1)
  • AAA: use #6994f2 as the text (7.12:1)
  • AA: or shift the background to #d4d4d4 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #124fd3 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

#124fd3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #124fd3
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 #124fd3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/124fd3-9ca4c4-df6b4e-211f2d-e9eff1?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