#3A86FF
#8EC5FC
#E0C3FC
#FFFFFF
#2B2B2BGunmetal
#008FC2Steel Blue
#F1FAEESmoke
#457B9DSteel Blue
Classic Steel Blue & Smoke is a monochromatic color palette tagged cold, blue, white. A monochromatic set: the same hue family from Gunmetal down to Smoke. 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 |
|---|---|---|---|---|---|
| Gunmetal | #2B2B2B | rgb(43, 43, 43) | hsl(0, 0%, 17%) | oklch(28.9% 0.000 0) | |
| Steel Blue | #008FC2 | rgb(0, 143, 194) | hsl(196, 100%, 38%) | oklch(61.1% 0.126 233) | |
| Smoke | #F1FAEE | rgb(241, 250, 238) | hsl(105, 55%, 96%) | oklch(97.5% 0.018 138) | |
| Steel Blue | #457B9D | rgb(69, 123, 157) | hsl(203, 39%, 44%) | oklch(56.0% 0.078 238) |
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 (96% down to 17% lightness). A natural fit for websites, presentations and branding.
- Background: Smoke (#F1FAEE) is the lightest color, so it belongs on large surfaces.
- Text: Gunmetal (#2B2B2B) on #F1FAEE gives 13.25:1, passing WCAG AAA.
- Primary: Steel Blue (#008FC2) is the most saturated mid-tone; use it for buttons and links (3.44:1 against the background, fine for UI elements).
- Accent: Steel Blue (#457B9D) for highlights, badges and hover states.
1 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Gunmetal on Smoke at 13.25:1.
Preview on a real UI see how the palette feels in context
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Design faster with Classic Steel Blue & Smoke
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
#2B2B2B
#008FC2
#F1FAEE
#457B9D
Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.
Contrast check WCAG ratios between palette colors
| Pair | Sample | Ratio | Level |
|---|---|---|---|
#2B2B2B on #F1FAEE | Aa | 13.25:1 | AAA |
#F1FAEE on #457B9D | Aa | 4.3:1 | AA large only |
#2B2B2B on #008FC2 | Aa | 3.85:1 | AA large only |
#008FC2 on #F1FAEE | Aa | 3.44:1 | AA large only |
#2B2B2B on #457B9D | Aa | 3.08:1 | AA large only |
#008FC2 on #457B9D | Aa | 1.25:1 | Fail |
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