Color
#21acde
#21acdergb(33, 172, 222)hsl(196, 74%, 50%)oklch(0.698 0.131 229.1)Colors that go with #21acde
Charcoal, Amber and 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 #21acde: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #21acde in 7 real palettes, including Salesforce's brand system and Blueprint, as the accent.
Blue #0000ff
shipped5 real palettes, including Warp's brand system and Canva's brand system put Blue beside #21acde, as the supporting colour.
Dark Orange #ff8c00
shippedDark Orange shows up next to #21acde in 4 real palettes, including Elastic's brand system and Learning App, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #21acde: 6 real palettes, including Coca-Cola's brand system and Venmo's brand system, as the accent.
Midnight Blue #191970
shipped7 real palettes, including Confluent's brand system and SoFi's brand system put Midnight Blue beside #21acde, as the lead colour.
Mustard Yellow #ffdb58
shipped4 real palettes, including Lido and Crayon Box put Mustard Yellow beside #21acde, as the accent.
Coral #ff7f50
complementaryCoral sits directly opposite #21acde on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #21acde
Tints & shades
Harmonies
Contrast
| #21acde as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.62:1 | fail | fail | fail | |
Aaon black | 8.02:1 | 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 #21acde as the background.
Brands using this color
Fonts for this mood
#21acde 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 #21acde and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/21acde-9cb5c4-df4e6e-1f232d-e9f1ef?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