Color
#99df58
#99df58rgb(153, 223, 88)hsl(91, 68%, 61%)oklch(0.83 0.181 132.3)Colors that go with #99df58
Charcoal, Deep Sky Blue and Taupe lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #99df58: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Deep Sky Blue #00bfff
triadicshippedDeep Sky Blue completes a triad with #99df58 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Taupe #483c32
shippedTaupe is paired with #99df58 in 7 real palettes, including 7-Eleven's brand system and Citrus Grove, as the lead colour.
Plum #dda0dd
complementaryPlum sits directly opposite #99df58 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped3 real palettes, including MongoDB's brand system and Minecraft's brand system put Blue beside #99df58, as the accent.
Mustard Yellow #ffdb58
shipped3 real palettes, including Citrus Grove and Meadow put Mustard Yellow beside #99df58, as the accent.
Red #ff0000
shippedRed is paired with #99df58 in 3 real palettes, including Wise's brand system and Gatorade's brand system, as the lead colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #99df58 in 3 real palettes, including MongoDB's brand system and Brilliant's brand system, as the supporting colour.
Real palettes that use #99df58
Tints & shades
Harmonies
Contrast
| #99df58 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.61:1 | fail | fail | fail | |
Aaon black | 13.05:1 | 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 #99df58 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #99df58 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/99df58-acbea2-534edf-202d1f-f1f1e9?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md