#0E3B4A
#1F7A8C
#8FD5D2
#EAF7F5
#0B3954Prussian Blue
#087E8BTeal
#BFD7EAPowder Blue
#FFFFFFWhite
Harbor Blue is a monochromatic color palette tagged ocean, muted, cold. A monochromatic set: the same hue family from Prussian Blue down to White. Saturation is moderate, which keeps it flexible for both interfaces and print. The overall temperature is cool.
Color codes click any value to copy
| Swatch | Name | HEX | RGB | HSL | OKLCH |
|---|---|---|---|---|---|
| Prussian Blue | #0B3954 | rgb(11, 57, 84) | hsl(202, 77%, 19%) | oklch(32.9% 0.067 240) | |
| Teal | #087E8B | rgb(8, 126, 139) | hsl(186, 89%, 29%) | oklch(54.3% 0.092 208) | |
| Powder Blue | #BFD7EA | rgb(191, 215, 234) | hsl(207, 51%, 83%) | oklch(86.7% 0.037 242) | |
| White | #FFFFFF | rgb(255, 255, 255) | hsl(0, 0%, 100%) | oklch(100.0% 0.000 0) |
Why it works and how to use it
With 3 chromatic colors, Teal takes the lead while the rest support. Lightness runs from 19% to 100%. Well suited to websites, presentations and branding.
- Background: White (#FFFFFF) is the lightest color, so it belongs on large surfaces.
- Text: Prussian Blue (#0B3954) on #FFFFFF gives 12.16:1, passing WCAG AAA.
- Primary: Teal (#087E8B) is the most saturated mid-tone; use it for buttons and links (4.81:1 against the background, fine for UI elements).
- Accent: Powder Blue (#BFD7EA) for highlights, badges and hover states.
3 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Prussian Blue on White at 12.16:1.
Preview on a real UI see how the palette feels in context
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Design faster with Harbor Blue
A palette preview that turns four colors into a page, so you can judge hierarchy, contrast and mood before you commit.
Primary action SecondaryCard title
Card title
Card title
Roles are assigned by lightness.
Color blindness simulation
#0B3954
#087E8B
#BFD7EA
#FFFFFF
Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.
Contrast check WCAG ratios between palette colors
| Pair | Sample | Ratio | Level |
|---|---|---|---|
#0B3954 on #FFFFFF | Aa | 12.16:1 | AAA |
#0B3954 on #BFD7EA | Aa | 8.18:1 | AAA |
#087E8B on #FFFFFF | Aa | 4.81:1 | AA |
#087E8B on #BFD7EA | Aa | 3.23:1 | AA large only |
#0B3954 on #087E8B | Aa | 2.53:1 | Fail |
#BFD7EA on #FFFFFF | Aa | 1.49:1 | Fail |
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