Color
#3fd9de
#3fd9dergb(63, 217, 222)hsl(182, 71%, 56%)oklch(0.81 0.124 198.2)Colors that go with #3fd9de
Charcoal, Light Coral and Deep Sky 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 text near-black for #3fd9de: softer than #000 and cool enough to feel like part of the same palette.
Light Coral #f08080
complementaryshippedLight Coral sits directly opposite #3fd9de on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Deep Sky Blue #00bfff
analogousshippedDeep Sky Blue is #3fd9de's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Dodger Blue #1e90ff
shippedDodger Blue is paired with #3fd9de in 4 real palettes, including Patreon's brand system and Opensea's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #3fd9de in 13 real palettes, including Crayon Box and Boeing's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Wheat #f5deb3
shippedWheat is paired with #3fd9de in 4 real palettes, including Mint Chip and Oatly's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #3fd9de in 3 real palettes, including Riot Games's brand system and Formula 1's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Khaki #f0e68c
shippedKhaki is paired with #3fd9de in 3 real palettes, including Pastel Pop and Nursery, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #3fd9de
Tints & shades
Harmonies
Contrast
| #3fd9de as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.72:1 | fail | fail | fail | |
Aaon black | 12.19:1 | 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 #3fd9de as the background.
Brands using this color
Fonts for this mood
#3fd9de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
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 #3fd9de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3fd9de-a2babe-d45990-1f272d-e9f1ee?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