Cobalt

#3640AB

Blue

Color Codes

All color formats for development

HEX
#3640AB
RGB
rgb(54, 64, 171)
HSL
hsl(235, 52%, 44%)
OKLCH
oklch(0.432 0.169 272.9)
CMYK
cmyk(68%, 63%, 0%, 33%)

Accessibility

WCAG contrast compliance

On White Background

8.47:1

AA AAA

On Black Background

2.48:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F3F4
100
#E4E5
200
#CDCF
300
#A6AB
400
#777F
500
#515B
600
#3640
700
#2B33
800
#1F24
900
#1417
950
#0C0E

Shades

Darker variations

1#303999
2#2B3388
3#262D77
4#202666
5#1B2055
6#161944
7#101333
8#0B0D22
9#050611

Tints

Lighter variations

1#3D48C0
2#515BC8
3#6770CF
4#7D84D6
5#9299DD
6#A8ADE4
7#BEC2EA
8#D4D6F1
9#E9EBF8

Tones

Muted variations

1#3C44A5
2#42499F
3#474E99
4#4D5393
5#53588D
6#595D88
7#5F6282
8#65667C
9#6A6B76

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F3F4
#F3F4FB
BackgroundsSubtle highlightsCard backgrounds
100
E4E5
#E4E5F6
Light backgroundsTable row hoverSkeleton loading
200
CDCF
#CDCFEF
Secondary backgroundsInput backgroundsDividers
300
A6AB
#A6ABE3
BordersInactive statesPlaceholder text
400
777F
#777FD4
Disabled statesSecondary iconsMuted text
500
515B
#515BC8
Primary brand colorCTAsActive elementsLinks
600
3640
#3640AB
Hover statesFocus ringsPrimary buttons hover
700
2B33
#2B3388
Active/pressed statesDark mode accentsSecondary text
800
1F24
#1F2461
Text on light backgroundsHeadingsStrong borders
900
1417
#14173E
Primary textHigh emphasis contentDark headings
950
0C0E
#0C0E27
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F3F4FB;
  --cobalt-100: #E4E5F6;
  --cobalt-200: #CDCFEF;
  --cobalt-300: #A6ABE3;
  --cobalt-400: #777FD4;
  --cobalt-500: #515BC8;
  --cobalt-600: #3640AB;
  --cobalt-700: #2B3388;
  --cobalt-800: #1F2461;
  --cobalt-900: #14173E;
  --cobalt-950: #0C0E27;
}
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