Steel Blue

#3F99D9

Blue

Color Codes

All color formats for development

HEX
#3F99D9
RGB
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

On White Background

3.10:1

AA AAA

On Black Background

6.77:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F2F8
100
#E1EF
200
#C8E2
300
#9DCB
400
#6AB0
500
#3F99
600
#257D
700
#1D63
800
#1547
900
#0D2D
950
#081C

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

LevelColorTypical 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;
}
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