Harbour
Open in tool →Steel blue and haze with a buoy orange on a pale grey — the maritime palette every port town uses for a reason.
Named color
Aquatic
#99c1cc
hex
#99c1ccrgb
rgb(153, 193, 204)hsl
hsl(193, 33%, 70%)oklch
oklch(0.786 0.045 216.4)Relative luminance 0.4927
Aquatic on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the 1 public brand that uses it and the palettes it appears in.
Colors that go with Aquatic
Charcoal, Dark Salmon and Copper 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 Aquatic: softer than #000 and cool enough to feel like part of the same palette.
Dark Salmon #e9967a
complementaryshippedDark Salmon sits directly opposite Aquatic on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Copper #b87333
shippedDesigners have shipped Copper with Aquatic: 5 real palettes, including Clean Beauty and Desert Road, as the accent.
Crimson #dc143c
shippedCrimson is paired with Aquatic in 5 real palettes, including Tiffany & Co.'s brand system and Frost & Ember, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with Aquatic: 7 real palettes, including Max's brand system and Calm's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with Aquatic: 6 real palettes, including Open House and Coca-Cola's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with Aquatic: 4 real palettes, including Opensea's brand system and Patreon's brand system, as the lead colour.
Midnight Blue #191970
shipped7 real palettes, including Telehealth and Lavender Milk put Midnight Blue beside Aquatic, as the text colour against it.
Real palettes that use Aquatic
Tints & shades
Harmonies
Contrast
| Aquatic as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.93:1 | fail | fail | fail | |
Aaon black | 10.85:1 | 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 Aquatic as the background.
Brands using this color
Palettes built around it
Fonts for this mood
Aquatic reads as cool, muted, light. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around Aquatic
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #99c1cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/99c1cc-a2b5be-df4e75-1f242d-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