Cobalt

#043A7B

Blue

Color Codes

All color formats for development

HEX
#043A7B
RGB
rgb(4, 58, 123)
HSL
hsl(213, 94%, 25%)
OKLCH
oklch(0.359 0.122 257)
CMYK
cmyk(97%, 53%, 0%, 52%)

Accessibility

WCAG contrast compliance

On White Background

11.07:1

AA AAA

On Black Background

1.90:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F0F7
100
#DCEB
200
#BFDB
300
#8DBF
400
#529D
500
#2081
600
#0766
700
#0551
800
#043A
900
#0225
950
#0217

Shades

Darker variations

1#03346F
2#032E63
3#032857
4#02234A
5#021D3E
6#021731
7#011125
8#010C19
9#00060C

Tints

Lighter variations

1#054BA1
2#065CC6
3#076EEB
4#2081F8
5#4596F9
6#6BABFA
7#90C0FC
8#B5D5FD
9#DAEAFE

Tones

Muted variations

1#0A3A76
2#103B70
3#163C6A
4#1C3C64
5#223D5E
6#283D58
7#2E3E52
8#343F4C
9#3A3F46

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F0F7
#F0F7FF
BackgroundsSubtle highlightsCard backgrounds
100
DCEB
#DCEBFE
Light backgroundsTable row hoverSkeleton loading
200
BFDB
#BFDBFD
Secondary backgroundsInput backgroundsDividers
300
8DBF
#8DBFFB
BordersInactive statesPlaceholder text
400
529D
#529DFA
Disabled statesSecondary iconsMuted text
500
2081
#2081F8
Primary brand colorCTAsActive elementsLinks
600
0766
#0766DA
Hover statesFocus ringsPrimary buttons hover
700
0551
#0551AD
Active/pressed statesDark mode accentsSecondary text
800
043A
#043A7C
Text on light backgroundsHeadingsStrong borders
900
0225
#02254F
Primary textHigh emphasis contentDark headings
950
0217
#021731
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F0F7FF;
  --cobalt-100: #DCEBFE;
  --cobalt-200: #BFDBFD;
  --cobalt-300: #8DBFFB;
  --cobalt-400: #529DFA;
  --cobalt-500: #2081F8;
  --cobalt-600: #0766DA;
  --cobalt-700: #0551AD;
  --cobalt-800: #043A7C;
  --cobalt-900: #02254F;
  --cobalt-950: #021731;
}
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