Color

#125bb5

#125bb5
hex#125bb5
rgbrgb(18, 91, 181)
hslhsl(213, 82%, 39%)
oklchoklch(0.483 0.158 257)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1095

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b56c12

#12adb5 · #1a12b5

#b5125b · #5bb512

Split-complementary

Open in tool →

#b51a12 · #adb512

#b512ad · #b56c12 · #12b51a

Contrast

#125bb5 as textRatioAAAA largeAAAFix
Aaon white
6.58:1passpassfail
  • AAA: use #1157ac as the text (7.04:1)
Aaon black
3.19:1failpassfail
  • AA: use #1673e3 as the text (4.6:1)
  • AAA: use #5399ee as the text (7.16:1)
  • AA: or shift the background to #d6d6d6 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #125bb5 as the background.

Brands using this color

Fonts for this mood

#125bb5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #125bb5
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 #125bb5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/125bb5-9ca9c4-df584e-1f202d-e9f0f1?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