Color
#c3e538
#c3e538rgb(195, 229, 56)hsl(72, 77%, 56%)oklch(0.868 0.19 120.5)Colors that go with #c3e538
Charcoal, Blue and Cornflower Blue 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 #c3e538: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Blue #0000ff
shipped5 real palettes, including Robinhood's brand system and Binance's brand system put Blue beside #c3e538, as the supporting colour.
Cornflower Blue #6495ed
split-complementshippedCornflower Blue is a split-complement of #c3e538: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #c3e538 in 7 real palettes, including Wise's brand system and Lay's's brand system, as the accent.
Deep Sky Blue #00bfff
triadicshippedDeep Sky Blue completes a triad with #c3e538 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Denim #1560bd
shippedDesigners have shipped Denim with #c3e538: 6 real palettes, including Ikea's brand system and LEGO's brand system, as the accent.
Red #ff0000
shippedRed is paired with #c3e538 in 6 real palettes, including Wise's brand system and Paddle's brand system, as the lead colour.
Taupe #483c32
shippedTaupe is paired with #c3e538 in 7 real palettes, including Citrus Grove and Crayon Box, as the text colour against it.
Real palettes that use #c3e538
Tints & shades
Harmonies
Contrast
| #c3e538 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.44:1 | fail | fail | fail | |
Aaon black | 14.59:1 | 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 #c3e538 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 #c3e538 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/c3e538-b5bea2-4e77df-242d1f-f1efe9?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