Aqua Marine is a vivid monochromatic color palette tagged ocean, cold, white. A monochromatic set: the same hue family from Gunmetal down to Frost. Saturation runs high, so use the brightest color sparingly and let the others carry the surface area. The overall temperature is cool.
Color codes click any value to copy
| Swatch | Name | HEX | RGB | HSL | OKLCH |
|---|---|---|---|---|---|
| Frost | #E0FBFC | rgb(224, 251, 252) | hsl(182, 82%, 93%) | oklch(96.9% 0.028 199) | |
| Powder Blue | #98E2E8 | rgb(152, 226, 232) | hsl(185, 63%, 75%) | oklch(86.6% 0.074 202) | |
| Cadet | #00A8B5 | rgb(0, 168, 181) | hsl(184, 100%, 35%) | oklch(66.7% 0.114 205) | |
| Gunmetal | #0B3C42 | rgb(11, 60, 66) | hsl(187, 71%, 15%) | oklch(32.8% 0.051 207) |
Why it works and how to use it
It works because the lightness range is wide (15% to 93%), which gives clear hierarchy between background, content and accents. Try it for websites, presentations and branding.
- Background: Frost (#E0FBFC) is the lightest color, so it belongs on large surfaces.
- Text: Gunmetal (#0B3C42) on #E0FBFC gives 11.14:1, passing WCAG AAA.
- Primary: Cadet (#00A8B5) is the most saturated mid-tone; use it for buttons and links with a border or a darker shade for contrast.
- Accent: Powder Blue (#98E2E8) for highlights, badges and hover states.
2 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Frost on Gunmetal at 11.14:1.
Preview on a real UI see how the palette feels in context
Design faster with Aqua Marine
A palette preview that turns four colors into a page, so you can judge hierarchy, contrast and mood before you commit.
Primary action SecondaryColor blindness simulation
Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.
Contrast check WCAG ratios between palette colors
| Pair | Sample | Ratio | Level |
|---|---|---|---|
#E0FBFC on #0B3C42 | Aa | 11.14:1 | AAA |
#98E2E8 on #0B3C42 | Aa | 8.27:1 | AAA |
#00A8B5 on #0B3C42 | Aa | 4.18:1 | AA large only |
#E0FBFC on #00A8B5 | Aa | 2.67:1 | Fail |
#98E2E8 on #00A8B5 | Aa | 1.98:1 | Fail |
#E0FBFC on #98E2E8 | Aa | 1.35:1 | Fail |