#F1EFE7
#D9D4C7
#8C8A82
#2F2F2F
#363F44Iron
#6D7D87Slate
#98D5E2Sky Blue
#E1F2F6Frost
Cool Sky Blue & Slate is a monochromatic color palette tagged minimal, gray, white. All four colors sit within 0° of hue, so the scheme reads as one color explored across light and dark. Neither washed out nor loud, it adapts to most contexts. The overall temperature is cool.
Color codes click any value to copy
| Swatch | Name | HEX | RGB | HSL | OKLCH |
|---|---|---|---|---|---|
| Iron | #363F44 | rgb(54, 63, 68) | hsl(201, 11%, 24%) | oklch(36.1% 0.015 232) | |
| Slate | #6D7D87 | rgb(109, 125, 135) | hsl(203, 11%, 48%) | oklch(58.0% 0.024 235) | |
| Sky Blue | #98D5E2 | rgb(152, 213, 226) | hsl(191, 56%, 74%) | oklch(83.6% 0.065 212) | |
| Frost | #E1F2F6 | rgb(225, 242, 246) | hsl(191, 54%, 92%) | oklch(95.0% 0.019 213) |
Why it works and how to use it
It works because the lightness range is wide (24% to 92%), which gives clear hierarchy between background, content and accents. Try it for websites, presentations and branding.
- Background: Frost (#E1F2F6) is the lightest color, so it belongs on large surfaces.
- Text: Iron (#363F44) on #E1F2F6 gives 9.34:1, passing WCAG AAA.
- Primary: Sky Blue (#98D5E2) is the most saturated mid-tone; use it for buttons and links with a border or a darker shade for contrast.
- Accent: Slate (#6D7D87) for highlights, badges and hover states.
2 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Iron on Frost at 9.34:1.
Preview on a real UI see how the palette feels in context
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Design faster with Cool Sky Blue & Slate
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
#363F44
#6D7D87
#98D5E2
#E1F2F6
Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.
Contrast check WCAG ratios between palette colors
| Pair | Sample | Ratio | Level |
|---|---|---|---|
#363F44 on #E1F2F6 | Aa | 9.34:1 | AAA |
#363F44 on #98D5E2 | Aa | 6.64:1 | AA |
#6D7D87 on #E1F2F6 | Aa | 3.7:1 | AA large only |
#6D7D87 on #98D5E2 | Aa | 2.63:1 | Fail |
#363F44 on #6D7D87 | Aa | 2.53:1 | Fail |
#98D5E2 on #E1F2F6 | Aa | 1.41:1 | Fail |
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