Cobalt

#133BA0

Blue

Color Codes

All color formats for development

HEX
#133BA0
RGB
rgb(19, 59, 160)
HSL
hsl(223, 79%, 35%)
OKLCH
oklch(0.397 0.17 263.8)
CMYK
cmyk(88%, 63%, 0%, 37%)

Accessibility

WCAG contrast compliance

On White Background

9.72:1

AA AAA

On Black Background

2.16:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F1F5
100
#DFE7
200
#C4D3
300
#96B0
400
#5F87
500
#3265
600
#184A
700
#133B
800
#0D2A
900
#091B
950
#0511

Shades

Darker variations

1#113590
2#0F2F80
3#0D2970
4#0B2360
5#091D50
6#071740
7#061230
8#040C20
9#020610

Tints

Lighter variations

1#1646BD
2#1A50DB
3#2F63E7
4#4D7AEA
5#6B90EE
6#88A6F1
7#A6BCF5
8#C4D3F8
9#E1E9FC

Tones

Muted variations

1#1A3E99
2#214192
3#28448B
4#2F4784
5#364A7D
6#3D4D75
7#44506E
8#4B5367
9#525660

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F1F5
#F1F5FD
BackgroundsSubtle highlightsCard backgrounds
100
DFE7
#DFE7FB
Light backgroundsTable row hoverSkeleton loading
200
C4D3
#C4D3F8
Secondary backgroundsInput backgroundsDividers
300
96B0
#96B0F3
BordersInactive statesPlaceholder text
400
5F87
#5F87EC
Disabled statesSecondary iconsMuted text
500
3265
#3265E7
Primary brand colorCTAsActive elementsLinks
600
184A
#184AC9
Hover statesFocus ringsPrimary buttons hover
700
133B
#133BA0
Active/pressed statesDark mode accentsSecondary text
800
0D2A
#0D2A72
Text on light backgroundsHeadingsStrong borders
900
091B
#091B49
Primary textHigh emphasis contentDark headings
950
0511
#05112E
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F1F5FD;
  --cobalt-100: #DFE7FB;
  --cobalt-200: #C4D3F8;
  --cobalt-300: #96B0F3;
  --cobalt-400: #5F87EC;
  --cobalt-500: #3265E7;
  --cobalt-600: #184AC9;
  --cobalt-700: #133BA0;
  --cobalt-800: #0D2A72;
  --cobalt-900: #091B49;
  --cobalt-950: #05112E;
}
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