Cobalt

#0B3E75

Blue

Color Codes

All color formats for development

HEX
#0B3E75
RGB
rgb(11, 62, 117)
HSL
hsl(211, 83%, 25%)
OKLCH
oklch(0.365 0.107 254.5)
CMYK
cmyk(91%, 47%, 0%, 54%)

Accessibility

WCAG contrast compliance

On White Background

10.71:1

AA AAA

On Black Background

1.96:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F1F7
100
#DEED
200
#C2DD
300
#94C3
400
#5CA3
500
#2D89
600
#136D
700
#0F57
800
#0B3E
900
#0728
950
#0419

Shades

Darker variations

1#0A3869
2#09325D
3#082B52
4#072546
5#051F3A
6#04192F
7#031323
8#020C17
9#01060C

Tints

Lighter variations

1#0E5198
2#1163BB
3#1576DE
4#2D89EB
5#509DEF
6#73B0F2
7#96C4F5
8#B9D8F8
9#DCEBFC

Tones

Muted variations

1#103E6F
2#153E6A
3#1B3F65
4#203F5F
5#253F5A
6#2B3F55
7#303F50
8#353F4A
9#3A4045

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F1F7
#F1F7FE
BackgroundsSubtle highlightsCard backgrounds
100
DEED
#DEEDFC
Light backgroundsTable row hoverSkeleton loading
200
C2DD
#C2DDF9
Secondary backgroundsInput backgroundsDividers
300
94C3
#94C3F5
BordersInactive statesPlaceholder text
400
5CA3
#5CA3F0
Disabled statesSecondary iconsMuted text
500
2D89
#2D89EB
Primary brand colorCTAsActive elementsLinks
600
136D
#136DCD
Hover statesFocus ringsPrimary buttons hover
700
0F57
#0F57A3
Active/pressed statesDark mode accentsSecondary text
800
0B3E
#0B3E75
Text on light backgroundsHeadingsStrong borders
900
0728
#07284B
Primary textHigh emphasis contentDark headings
950
0419
#04192F
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F1F7FE;
  --cobalt-100: #DEEDFC;
  --cobalt-200: #C2DDF9;
  --cobalt-300: #94C3F5;
  --cobalt-400: #5CA3F0;
  --cobalt-500: #2D89EB;
  --cobalt-600: #136DCD;
  --cobalt-700: #0F57A3;
  --cobalt-800: #0B3E75;
  --cobalt-900: #07284B;
  --cobalt-950: #04192F;
}
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