Color
Astro Secondary
#54b9ffrgb(84, 185, 255)hsl(205, 100%, 66%)oklch(0.755 0.138 242.1)Colors that go with Astro Secondary
Charcoal, Dark Orange and Amber 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 Astro Secondary: softer than #000 and cool enough to feel like part of the same palette.
Dark Orange #ff8c00
complementaryshippedDark Orange sits directly opposite Astro Secondary on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with Astro Secondary in 4 real palettes, including Blueprint and Salesforce's brand system, as the accent.
Blue #0000ff
shipped5 real palettes, including Warp's brand system and Canva's brand system put Blue beside Astro Secondary, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with Astro Secondary: 6 real palettes, including Venmo's brand system and Coca-Cola's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with Astro Secondary: 4 real palettes, including Venmo's brand system and Figma's brand system, as the lead colour.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with Astro Secondary in 4 real palettes, including Terminal and Telehealth, as the lead colour.
Midnight Blue #191970
shipped8 real palettes, including Kraken's brand system and Blue Mono put Midnight Blue beside Astro Secondary, as the lead colour.
Real palettes that use Astro Secondary
Tints & shades
Harmonies
Contrast
| Astro Secondary as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.15:1 | fail | fail | fail | |
Aaon black | 9.76:1 | 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 Astro Secondary as the background.
Brands using this color
Fonts for this mood
Astro Secondary 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 #54b9ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/54b9ff-9cafc4-df4e58-1f212d-e9f1f0?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