Cobalt

#253CBB

Blue

Color Codes

All color formats for development

HEX
#253CBB
RGB
rgb(37, 60, 187)
HSL
hsl(231, 67%, 44%)
OKLCH
oklch(0.431 0.199 268.1)
CMYK
cmyk(80%, 68%, 0%, 27%)

Accessibility

WCAG contrast compliance

On White Background

8.60:1

AA AAA

On Black Background

2.44:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F2F4
100
#E1E5
200
#C8CE
300
#9DA9
400
#6A7C
500
#3F56
600
#253C
700
#1D2F
800
#1522
900
#0D16
950
#080E

Shades

Darker variations

1#2136A9
2#1E3096
3#1A2A83
4#162470
5#131E5E
6#0F184B
7#0B1238
8#070C25
9#040613

Tints

Lighter variations

1#2A43D3
2#4057D9
3#586CDE
4#7081E3
5#8896E7
6#A0ABEC
7#B7C0F1
8#CFD5F6
9#E7EAFA

Tones

Muted variations

1#2D41B4
2#3446AC
3#3C4BA5
4#43519D
5#4B5696
6#525B8E
7#5A6087
8#61667F
9#696B78

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F2F4
#F2F4FC
BackgroundsSubtle highlightsCard backgrounds
100
E1E5
#E1E5F9
Light backgroundsTable row hoverSkeleton loading
200
C8CE
#C8CEF4
Secondary backgroundsInput backgroundsDividers
300
9DA9
#9DA9EC
BordersInactive statesPlaceholder text
400
6A7C
#6A7CE2
Disabled statesSecondary iconsMuted text
500
3F56
#3F56D9
Primary brand colorCTAsActive elementsLinks
600
253C
#253CBB
Hover statesFocus ringsPrimary buttons hover
700
1D2F
#1D2F95
Active/pressed statesDark mode accentsSecondary text
800
1522
#15226A
Text on light backgroundsHeadingsStrong borders
900
0D16
#0D1644
Primary textHigh emphasis contentDark headings
950
080E
#080E2B
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F2F4FC;
  --cobalt-100: #E1E5F9;
  --cobalt-200: #C8CEF4;
  --cobalt-300: #9DA9EC;
  --cobalt-400: #6A7CE2;
  --cobalt-500: #3F56D9;
  --cobalt-600: #253CBB;
  --cobalt-700: #1D2F95;
  --cobalt-800: #15226A;
  --cobalt-900: #0D1644;
  --cobalt-950: #080E2B;
}
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