Steel Blue
#3F99D9
BlueColor Codes
All color formats for development
HEX
#3F99D9RGB
rgb(63, 153, 217)HSL
hsl(205, 67%, 55%)OKLCH
oklch(0.657 0.128 243.2)CMYK
cmyk(71%, 29%, 0%, 15%)Accessibility
WCAG contrast compliance
Tailwind Scale
50-950 scale matching Tailwind CSS naming
Shades
Darker variations
1#2A8CD3
2#257DBB
3#206DA4
4#1C5E8D
5#174E75
6#133E5E
7#0E2F46
8#091F2F
9#051017
Tints
Lighter variations
1#53A3DD
2#66ADE1
3#79B8E4
4#8CC2E8
5#9FCCEC
6#B2D6F0
7#C6E0F4
8#D9EBF7
9#ECF5FB
Tones
Muted variations
1#4798D1
2#4F97CA
3#5695C2
4#5E94BA
5#6693B3
6#6D91AB
7#7590A3
8#7D8F9C
9#858E94
Usage Guidelines
Recommended use cases for each shade level
| Level | Color | Typical Use Cases |
|---|---|---|
| 50 | F2F8 #F2F8FC | BackgroundsSubtle highlightsCard backgrounds |
| 100 | E1EF #E1EFF9 | Light backgroundsTable row hoverSkeleton loading |
| 200 | C8E2 #C8E2F4 | Secondary backgroundsInput backgroundsDividers |
| 300 | 9DCB #9DCBEC | BordersInactive statesPlaceholder text |
| 400 | 6AB0 #6AB0E2 | Disabled statesSecondary iconsMuted text |
| 500 | 3F99 #3F99D9 | Primary brand colorCTAsActive elementsLinks |
| 600 | 257D #257DBB | Hover statesFocus ringsPrimary buttons hover |
| 700 | 1D63 #1D6395 | Active/pressed statesDark mode accentsSecondary text |
| 800 | 1547 #15476A | Text on light backgroundsHeadingsStrong borders |
| 900 | 0D2D #0D2D44 | Primary textHigh emphasis contentDark headings |
| 950 | 081C #081C2B | Maximum contrast textDark mode backgrounds |
Export Code
Copy ready-to-use code for your project
:root {
--steel-blue-50: #F2F8FC;
--steel-blue-100: #E1EFF9;
--steel-blue-200: #C8E2F4;
--steel-blue-300: #9DCBEC;
--steel-blue-400: #6AB0E2;
--steel-blue-500: #3F99D9;
--steel-blue-600: #257DBB;
--steel-blue-700: #1D6395;
--steel-blue-800: #15476A;
--steel-blue-900: #0D2D44;
--steel-blue-950: #081C2B;
}