brandsweets

Color

#eff613

#eff613
hex#eff613
rgbrgb(239, 246, 19)
hslhsl(62, 93%, 52%)
oklchoklch(0.937 0.205 111.9)
Closest name: Banana Bandanna (#f8f739)Relative luminance 0.8431
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
eff6131a13f6

#1a13f6

Analogous

Open in tool →
eff613f68c137df613

#f68c13 · #7df613

Triadic

Open in tool →
eff61313eff6f613ef

#13eff6 · #f613ef

Split-complementary

Open in tool →
eff613137df68c13f6

#137df6 · #8c13f6

Tetradic

Open in tool →
eff61313f68c1a13f6f6137d

#13f68c · #1a13f6 · #f6137d

Contrast

#eff613 as textRatioAAAA largeAAAFix
Aaon white
1.18:1failfailfail
  • AA: use #777b04 as the text (4.55:1)
  • AAA: use #565903 as the text (7.43:1)
  • AA: or shift the background to #6b6b6b (4.53:1)
  • AAA: or shift the background to #4d4d4d (7.19:1)
Aaon black
17.86:1passpasspassPasses 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 #eff613 as the background.

Brands using this color

mcpConnect your agent — build around #eff613
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 #eff613 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/eff613-babea2-4e8fdf-272d1f-f1eee9?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