#3A86FF
#8EC5FC
#E0C3FC
#FFFFFF
#03256CMarine
#1768ACLapis
#4FA3E0Blue Gray
#D4E9F7Ice
Blue Tonal is a vivid monochromatic color palette tagged gradient, cold, blue. A monochromatic set: the same hue family from Marine down to Ice. 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 |
|---|---|---|---|---|---|
| Marine | #03256C | rgb(3, 37, 108) | hsl(221, 95%, 22%) | oklch(29.7% 0.129 262) | |
| Lapis | #1768AC | rgb(23, 104, 172) | hsl(207, 76%, 38%) | oklch(50.7% 0.131 250) | |
| Blue Gray | #4FA3E0 | rgb(79, 163, 224) | hsl(205, 70%, 59%) | oklch(68.9% 0.121 243) | |
| Ice | #D4E9F7 | rgb(212, 233, 247) | hsl(204, 69%, 90%) | oklch(92.3% 0.029 237) |
Why it works and how to use it
The palette holds together thanks to its monochromatic hue relationship and a strong light-to-dark ladder (90% down to 22% lightness). A natural fit for websites, presentations and branding.
- Background: Ice (#D4E9F7) is the lightest color, so it belongs on large surfaces.
- Text: Marine (#03256C) on #D4E9F7 gives 11.31:1, passing WCAG AAA.
- Primary: Lapis (#1768AC) is the most saturated mid-tone; use it for buttons and links (4.65:1 against the background, fine for UI elements).
- Accent: Blue Gray (#4FA3E0) for highlights, badges and hover states.
3 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Marine on Ice at 11.31:1.
Preview on a real UI see how the palette feels in context
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Design faster with Blue Tonal
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
#03256C
#1768AC
#4FA3E0
#D4E9F7
Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.
Contrast check WCAG ratios between palette colors
| Pair | Sample | Ratio | Level |
|---|---|---|---|
#03256C on #D4E9F7 | Aa | 11.31:1 | AAA |
#03256C on #4FA3E0 | Aa | 5.15:1 | AA |
#1768AC on #D4E9F7 | Aa | 4.65:1 | AA |
#03256C on #1768AC | Aa | 2.43:1 | Fail |
#4FA3E0 on #D4E9F7 | Aa | 2.2:1 | Fail |
#1768AC on #4FA3E0 | Aa | 2.12:1 | Fail |
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