Cobalt

#253F8D

Blue

Color Codes

All color formats for development

HEX
#253F8D
RGB
rgb(37, 63, 141)
HSL
hsl(225, 58%, 35%)
OKLCH
oklch(0.395 0.133 266.4)
CMYK
cmyk(74%, 55%, 0%, 45%)

Accessibility

WCAG contrast compliance

On White Background

9.66:1

AA AAA

On Black Background

2.17:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F3F5
100
#E3E8
200
#CBD4
300
#A2B3
400
#728C
500
#4A6B
600
#2F50
700
#253F
800
#1B2D
900
#111D
950
#0B12

Shades

Darker variations

1#22397F
2#1E3371
3#1A2C63
4#162655
5#132047
6#0F1938
7#0B132A
8#070D1C
9#04060E

Tints

Lighter variations

1#2C4BA7
2#3357C1
3#4869CE
4#627FD5
5#7C94DC
6#96A9E3
7#B0BFEA
8#CBD4F1
9#E5EAF8

Tones

Muted variations

1#2B4288
2#304583
3#35477D
4#3A4A78
5#3F4C73
6#454F6E
7#4A5169
8#4F5464
9#54575E

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F3F5
#F3F5FC
BackgroundsSubtle highlightsCard backgrounds
100
E3E8
#E3E8F8
Light backgroundsTable row hoverSkeleton loading
200
CBD4
#CBD4F1
Secondary backgroundsInput backgroundsDividers
300
A2B3
#A2B3E6
BordersInactive statesPlaceholder text
400
728C
#728CDA
Disabled statesSecondary iconsMuted text
500
4A6B
#4A6BCF
Primary brand colorCTAsActive elementsLinks
600
2F50
#2F50B1
Hover statesFocus ringsPrimary buttons hover
700
253F
#253F8D
Active/pressed statesDark mode accentsSecondary text
800
1B2D
#1B2D65
Text on light backgroundsHeadingsStrong borders
900
111D
#111D40
Primary textHigh emphasis contentDark headings
950
0B12
#0B1228
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F3F5FC;
  --cobalt-100: #E3E8F8;
  --cobalt-200: #CBD4F1;
  --cobalt-300: #A2B3E6;
  --cobalt-400: #728CDA;
  --cobalt-500: #4A6BCF;
  --cobalt-600: #2F50B1;
  --cobalt-700: #253F8D;
  --cobalt-800: #1B2D65;
  --cobalt-900: #111D40;
  --cobalt-950: #0B1228;
}
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