Color

#1f15a8

#1f15a8
hex#1f15a8
rgbrgb(31, 21, 168)
hslhsl(244, 78%, 37%)
oklchoklch(0.355 0.213 270.6)
Closest name: Dark Galaxy (#0018a8)Relative luminance 0.0365

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9ea815

#1555a8 · #6815a8

#a81f15 · #15a81f

Split-complementary

Open in tool →

#a86815 · #55a815

#a81555 · #9ea815 · #15a868

Contrast

#1f15a8 as textRatioAAAA largeAAAFix
Aaon white
12.13:1passpasspassPasses AAA — no fix needed.
Aaon black
1.73:1failfailfail
  • AA: use #6e65ec as the text (4.74:1)
  • AAA: use #9089f0 as the text (7.02:1)
  • AA: or shift the background to #9e9e9e (4.53:1)
  • AAA: or shift the background to #c7c7c7 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f15a8 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

#1f15a8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f15a8
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 #1f15a8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f15a8-a39cc4-dfa24e-261f2d-e9edf1?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