Cobalt

#15439D

Blue

Color Codes

All color formats for development

HEX
#15439D
RGB
rgb(21, 67, 157)
HSL
hsl(220, 76%, 35%)
OKLCH
oklch(0.411 0.155 261.9)
CMYK
cmyk(87%, 57%, 0%, 38%)

Accessibility

WCAG contrast compliance

On White Background

9.05:1

AA AAA

On Black Background

2.32:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F2F5
100
#E0E9
200
#C5D5
300
#98B5
400
#628F
500
#356F
600
#1B54
700
#1543
800
#0F30
900
#0A1E
950
#0613

Shades

Darker variations

1#133C8D
2#11357E
3#0F2F6E
4#0D285E
5#0B214F
6#091B3F
7#06142F
8#040D1F
9#020710

Tints

Lighter variations

1#194FBA
2#1D5BD7
3#336EE3
4#5082E7
5#6D97EB
6#8AACEF
7#A7C1F3
8#C5D5F7
9#E2EAFB

Tones

Muted variations

1#1C4596
2#234790
3#2A4989
4#314C82
5#374E7B
6#3E5074
7#45526E
8#4C5567
9#525760

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F2F5
#F2F5FD
BackgroundsSubtle highlightsCard backgrounds
100
E0E9
#E0E9FB
Light backgroundsTable row hoverSkeleton loading
200
C5D5
#C5D5F7
Secondary backgroundsInput backgroundsDividers
300
98B5
#98B5F1
BordersInactive statesPlaceholder text
400
628F
#628FEA
Disabled statesSecondary iconsMuted text
500
356F
#356FE3
Primary brand colorCTAsActive elementsLinks
600
1B54
#1B54C5
Hover statesFocus ringsPrimary buttons hover
700
1543
#15439D
Active/pressed statesDark mode accentsSecondary text
800
0F30
#0F3070
Text on light backgroundsHeadingsStrong borders
900
0A1E
#0A1E48
Primary textHigh emphasis contentDark headings
950
0613
#06132D
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F2F5FD;
  --cobalt-100: #E0E9FB;
  --cobalt-200: #C5D5F7;
  --cobalt-300: #98B5F1;
  --cobalt-400: #628FEA;
  --cobalt-500: #356FE3;
  --cobalt-600: #1B54C5;
  --cobalt-700: #15439D;
  --cobalt-800: #0F3070;
  --cobalt-900: #0A1E48;
  --cobalt-950: #06132D;
}
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