Cobalt

#04387C

Blue

Color Codes

All color formats for development

HEX
#04387C
RGB
rgb(4, 56, 124)
HSL
hsl(214, 94%, 25%)
OKLCH
oklch(0.355 0.127 258.1)
CMYK
cmyk(97%, 55%, 0%, 51%)

Accessibility

WCAG contrast compliance

On White Background

11.28:1

AA AAA

On Black Background

1.86:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F0F6
100
#DCEB
200
#BFDA
300
#8DBD
400
#529B
500
#207E
600
#0762
700
#054E
800
#0438
900
#0224
950
#0216

Shades

Darker variations

1#03326F
2#032D63
3#032757
4#02214A
5#021C3E
6#021631
7#011125
8#010B19
9#00060C

Tints

Lighter variations

1#0548A1
2#0659C6
3#076AEB
4#207EF8
5#4593F9
6#6BA9FA
7#90BEFC
8#B5D4FD
9#DAE9FE

Tones

Muted variations

1#0A3976
2#103970
3#163A6A
4#1C3B64
5#223C5E
6#283D58
7#2E3D52
8#343E4C
9#3A3F46

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F0F6
#F0F6FF
BackgroundsSubtle highlightsCard backgrounds
100
DCEB
#DCEBFE
Light backgroundsTable row hoverSkeleton loading
200
BFDA
#BFDAFD
Secondary backgroundsInput backgroundsDividers
300
8DBD
#8DBDFB
BordersInactive statesPlaceholder text
400
529B
#529BFA
Disabled statesSecondary iconsMuted text
500
207E
#207EF8
Primary brand colorCTAsActive elementsLinks
600
0762
#0762DA
Hover statesFocus ringsPrimary buttons hover
700
054E
#054EAD
Active/pressed statesDark mode accentsSecondary text
800
0438
#04387C
Text on light backgroundsHeadingsStrong borders
900
0224
#02244F
Primary textHigh emphasis contentDark headings
950
0216
#021631
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F0F6FF;
  --cobalt-100: #DCEBFE;
  --cobalt-200: #BFDAFD;
  --cobalt-300: #8DBDFB;
  --cobalt-400: #529BFA;
  --cobalt-500: #207EF8;
  --cobalt-600: #0762DA;
  --cobalt-700: #054EAD;
  --cobalt-800: #04387C;
  --cobalt-900: #02244F;
  --cobalt-950: #021631;
}
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