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.
Color
#90c1df
#90c1df
hex
#90c1dfrgb
rgb(144, 193, 223)hsl
hsl(203, 55%, 72%)oklch
oklch(0.787 0.067 235.6)Closest name: Double Denim (#95bce1)Relative luminance 0.494
Colors that go with #90c1df
Charcoal, Dark Salmon 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 #90c1df: softer than #000 and cool enough to feel like part of the same palette.
Dark Salmon #e9967a
complementaryshippedDark Salmon sits directly opposite #90c1df on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped4 real palettes, including Uber's brand system and Warp's brand system put Blue beside #90c1df, as the accent.
Crimson #dc143c
shippedCrimson is paired with #90c1df in 5 real palettes, including Tiffany & Co.'s brand system and Frost & Ember, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #90c1df: 6 real palettes, including Coca-Cola's brand system and Open House, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #90c1df: 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 #90c1df, as the text colour against it.
Royal Blue #4169e1
shippedRoyal Blue is paired with #90c1df in 7 real palettes, including Telehealth and 1password's brand system, as the lead colour.
Real palettes that use #90c1df
Tints & shades
Harmonies
Contrast
| #90c1df as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.93:1 | fail | fail | fail | |
Aaon black | 10.88:1 | 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 #90c1df as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#90c1df reads as cool, light, clean. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #90c1df
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 #90c1df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/90c1df-9cb0c4-df4e5d-1f222d-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