Named color

Atomic Lime

#b9ff03

hex#b9ff03

rgbrgb(185, 255, 3)

hslhsl(77, 100%, 51%)

oklchoklch(0.919 0.237 127.1)

Relative luminance 0.8184

Vivid

Open in palette tool Check contrast

Atomic Lime on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the curated palettes it appears in and any public brand that adopts it.

Tints & shades

Tints — toward white

bfff1f c5ff33 ccff4d d4ff66 dbff80 e1ff94 e8ffad efffc7 f5ffdb fcfff5

Shades — toward black

a8eb00 9ad600 87bd00 75a300 668f00 547500 425c00 304200 212e00 0f1400

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

Harmonies

Complementary

Open in tool →

b9ff03 4c05ff

#4c05ff

Analogous

Open in tool →

b9ff03 ffc905 3bff05

#ffc905 · #3bff05

Triadic

Open in tool →

b9ff03 05b8ff ff05b8

#05b8ff · #ff05b8

Split-complementary

Open in tool →

b9ff03 053bff c905ff

#053bff · #c905ff

Tetradic

Open in tool →

b9ff03 05ffc9 4c05ff ff053b

#05ffc9 · #4c05ff · #ff053b

Contrast

Atomic Lime as text	Ratio	AA	AA large	AAA	Fix
Aaon white	1.21:1	fail	fail	fail	AA: use #5b8000 as the text (4.63:1) AAA: use #456100 as the text (7.09:1) AA: or shift the background to #696969 (4.54:1) AAA: or shift the background to #4a4a4a (7.33:1)
Aaon black	17.37:1	pass	pass	pass	Passes 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 Atomic Lime as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around Atomic Lime

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 #b9ff03 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b9ff03-b3bea2-4e6bdf-232d1f-f1efe9?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