Cobalt

#284FB8

Blue

Color Codes

All color formats for development

HEX
#284FB8
RGB
rgb(40, 79, 184)
HSL
hsl(224, 64%, 44%)
OKLCH
oklch(0.465 0.172 264.9)
CMYK
cmyk(78%, 57%, 0%, 28%)

Accessibility

WCAG contrast compliance

On White Background

7.24:1

AA AAA

On Black Background

2.90:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F2F5
100
#E2E8
200
#C9D4
300
#9FB3
400
#6D8B
500
#436A
600
#284F
700
#203F
800
#172D
900
#0F1D
950
#0912

Shades

Darker variations

1#2447A6
2#203F93
3#1C3781
4#182F6E
5#14275C
6#101F4A
7#0C1837
8#081025
9#040812

Tints

Lighter variations

1#2E59CF
2#446BD6
3#5B7DDB
4#7290E0
5#8AA2E5
6#A1B5EA
7#B9C7F0
8#D0DAF5
9#E8ECFA

Tones

Muted variations

1#3052B1
2#3755AA
3#3E59A2
4#455C9B
5#4C5F94
6#53638D
7#5B6686
8#62697F
9#696D77

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F2F5
#F2F5FC
BackgroundsSubtle highlightsCard backgrounds
100
E2E8
#E2E8F9
Light backgroundsTable row hoverSkeleton loading
200
C9D4
#C9D4F3
Secondary backgroundsInput backgroundsDividers
300
9FB3
#9FB3EA
BordersInactive statesPlaceholder text
400
6D8B
#6D8BDF
Disabled statesSecondary iconsMuted text
500
436A
#436AD6
Primary brand colorCTAsActive elementsLinks
600
284F
#284FB8
Hover statesFocus ringsPrimary buttons hover
700
203F
#203F92
Active/pressed statesDark mode accentsSecondary text
800
172D
#172D69
Text on light backgroundsHeadingsStrong borders
900
0F1D
#0F1D43
Primary textHigh emphasis contentDark headings
950
0912
#09122A
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F2F5FC;
  --cobalt-100: #E2E8F9;
  --cobalt-200: #C9D4F3;
  --cobalt-300: #9FB3EA;
  --cobalt-400: #6D8BDF;
  --cobalt-500: #436AD6;
  --cobalt-600: #284FB8;
  --cobalt-700: #203F92;
  --cobalt-800: #172D69;
  --cobalt-900: #0F1D43;
  --cobalt-950: #09122A;
}
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