Cobalt

#03487C

Blue

Color Codes

All color formats for development

HEX
#03487C
RGB
rgb(3, 72, 124)
HSL
hsl(206, 95%, 25%)
OKLCH
oklch(0.394 0.107 249)
CMYK
cmyk(98%, 42%, 0%, 51%)

Accessibility

WCAG contrast compliance

On White Background

9.45:1

AA AAA

On Black Background

2.22:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F0F8
100
#DCEF
200
#BEE2
300
#8DCC
400
#51B1
500
#1F9B
600
#067E
700
#0465
800
#0348
900
#022E
950
#011D

Shades

Darker variations

1#034170
2#033963
3#023257
4#022B4B
5#02243E
6#011D32
7#011625
8#010E19
9#00070C

Tints

Lighter variations

1#045DA2
2#0573C7
3#0688EC
4#1F9BF9
5#45ABFA
6#6ABCFB
7#8FCDFC
8#B4DEFD
9#DAEEFE

Tones

Muted variations

1#094776
2#0F4670
3#15456A
4#1B4564
5#21445E
6#284358
7#2E4252
8#34414C
9#3A4146

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F0F8
#F0F8FF
BackgroundsSubtle highlightsCard backgrounds
100
DCEF
#DCEFFE
Light backgroundsTable row hoverSkeleton loading
200
BEE2
#BEE2FD
Secondary backgroundsInput backgroundsDividers
300
8DCC
#8DCCFC
BordersInactive statesPlaceholder text
400
51B1
#51B1FB
Disabled statesSecondary iconsMuted text
500
1F9B
#1F9BF9
Primary brand colorCTAsActive elementsLinks
600
067E
#067EDB
Hover statesFocus ringsPrimary buttons hover
700
0465
#0465AE
Active/pressed statesDark mode accentsSecondary text
800
0348
#03487C
Text on light backgroundsHeadingsStrong borders
900
022E
#022E50
Primary textHigh emphasis contentDark headings
950
011D
#011D32
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F0F8FF;
  --cobalt-100: #DCEFFE;
  --cobalt-200: #BEE2FD;
  --cobalt-300: #8DCCFC;
  --cobalt-400: #51B1FB;
  --cobalt-500: #1F9BF9;
  --cobalt-600: #067EDB;
  --cobalt-700: #0465AE;
  --cobalt-800: #03487C;
  --cobalt-900: #022E50;
  --cobalt-950: #011D32;
}
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