Cobalt

#043AAE

Blue

Color Codes

All color formats for development

HEX
#043AAE
RGB
rgb(4, 58, 174)
HSL
hsl(221, 96%, 35%)
OKLCH
oklch(0.406 0.191 262.7)
CMYK
cmyk(98%, 67%, 0%, 32%)

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
#F0F5
100
#DCE7
200
#BED2
300
#8CB0
400
#5086
500
#1E64
600
#0449
700
#043A
800
#0329
900
#021A
950
#0111

Shades

Darker variations

1#03349D
2#032E8C
3#02287A
4#022369
5#021D57
6#011746
7#011134
8#010C23
9#000611

Tints

Lighter variations

1#0445CF
2#054FF0
3#1C62FA
4#3C79FB
5#5D8FFC
6#7DA5FC
7#9EBCFD
8#BED2FE
9#DFE9FE

Tones

Muted variations

1#0C3DA6
2#15409E
3#1D4395
4#26468D
5#2E4A84
6#374D7C
7#405073
8#48536A
9#515662

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F0F5
#F0F5FF
BackgroundsSubtle highlightsCard backgrounds
100
DCE7
#DCE7FE
Light backgroundsTable row hoverSkeleton loading
200
BED2
#BED2FE
Secondary backgroundsInput backgroundsDividers
300
8CB0
#8CB0FD
BordersInactive statesPlaceholder text
400
5086
#5086FB
Disabled statesSecondary iconsMuted text
500
1E64
#1E64FA
Primary brand colorCTAsActive elementsLinks
600
0449
#0449DC
Hover statesFocus ringsPrimary buttons hover
700
043A
#043AAF
Active/pressed statesDark mode accentsSecondary text
800
0329
#03297D
Text on light backgroundsHeadingsStrong borders
900
021A
#021A50
Primary textHigh emphasis contentDark headings
950
0111
#011132
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F0F5FF;
  --cobalt-100: #DCE7FE;
  --cobalt-200: #BED2FE;
  --cobalt-300: #8CB0FD;
  --cobalt-400: #5086FB;
  --cobalt-500: #1E64FA;
  --cobalt-600: #0449DC;
  --cobalt-700: #043AAF;
  --cobalt-800: #03297D;
  --cobalt-900: #021A50;
  --cobalt-950: #011132;
}
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