Cobalt

#0B3AA8

Blue

Color Codes

All color formats for development

HEX
#0B3AA8
RGB
rgb(11, 58, 168)
HSL
hsl(222, 88%, 35%)
OKLCH
oklch(0.401 0.183 263.2)
CMYK
cmyk(93%, 65%, 0%, 34%)

Accessibility

WCAG contrast compliance

On White Background

9.61:1

AA AAA

On Black Background

2.18:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F1F5
100
#DDE7
200
#C1D2
300
#91B0
400
#5786
500
#2764
600
#0D49
700
#0B3A
800
#0829
900
#051A
950
#0311

Shades

Darker variations

1#0A3497
2#092E86
3#072875
4#062365
5#051D54
6#041743
7#031132
8#020C22
9#010611

Tints

Lighter variations

1#0D45C7
2#0F4FE6
3#2562F1
4#4479F3
5#638FF5
6#82A5F7
7#A2BCF9
8#C1D2FB
9#E0E9FD

Tones

Muted variations

1#133DA0
2#1A4098
3#224390
4#2A4688
5#324A81
6#3A4D79
7#425071
8#4A5369
9#515661

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F1F5
#F1F5FE
BackgroundsSubtle highlightsCard backgrounds
100
DDE7
#DDE7FD
Light backgroundsTable row hoverSkeleton loading
200
C1D2
#C1D2FB
Secondary backgroundsInput backgroundsDividers
300
91B0
#91B0F8
BordersInactive statesPlaceholder text
400
5786
#5786F4
Disabled statesSecondary iconsMuted text
500
2764
#2764F1
Primary brand colorCTAsActive elementsLinks
600
0D49
#0D49D3
Hover statesFocus ringsPrimary buttons hover
700
0B3A
#0B3AA8
Active/pressed statesDark mode accentsSecondary text
800
0829
#082978
Text on light backgroundsHeadingsStrong borders
900
051A
#051A4D
Primary textHigh emphasis contentDark headings
950
0311
#031130
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F1F5FE;
  --cobalt-100: #DDE7FD;
  --cobalt-200: #C1D2FB;
  --cobalt-300: #91B0F8;
  --cobalt-400: #5786F4;
  --cobalt-500: #2764F1;
  --cobalt-600: #0D49D3;
  --cobalt-700: #0B3AA8;
  --cobalt-800: #082978;
  --cobalt-900: #051A4D;
  --cobalt-950: #031130;
}
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