Cobalt

#253E8D

Blue

Color Codes

All color formats for development

HEX
#253E8D
RGB
rgb(37, 62, 141)
HSL
hsl(226, 58%, 35%)
OKLCH
oklch(0.393 0.135 266.8)
CMYK
cmyk(74%, 56%, 0%, 45%)

Accessibility

WCAG contrast compliance

On White Background

9.76:1

AA AAA

On Black Background

2.15:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F3F5
100
#E3E8
200
#CBD4
300
#A2B2
400
#728A
500
#4A69
600
#2F4D
700
#253E
800
#1B2C
900
#111C
950
#0B12

Shades

Darker variations

1#22377F
2#1E3171
3#1A2B63
4#162555
5#131F47
6#0F1938
7#0B122A
8#070C1C
9#04060E

Tints

Lighter variations

1#2C49A7
2#3355C1
3#4867CE
4#627DD5
5#7C92DC
6#96A8E3
7#B0BEEA
8#CBD4F1
9#E5E9F8

Tones

Muted variations

1#2B4088
2#304383
3#35467D
4#3A4978
5#3F4B73
6#454E6E
7#4A5169
8#4F5464
9#54565E

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
A2B2
#A2B2E6
BordersInactive statesPlaceholder text
400
728A
#728ADA
Disabled statesSecondary iconsMuted text
500
4A69
#4A69CF
Primary brand colorCTAsActive elementsLinks
600
2F4D
#2F4DB1
Hover statesFocus ringsPrimary buttons hover
700
253E
#253E8D
Active/pressed statesDark mode accentsSecondary text
800
1B2C
#1B2C65
Text on light backgroundsHeadingsStrong borders
900
111C
#111C40
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: #A2B2E6;
  --cobalt-400: #728ADA;
  --cobalt-500: #4A69CF;
  --cobalt-600: #2F4DB1;
  --cobalt-700: #253E8D;
  --cobalt-800: #1B2C65;
  --cobalt-900: #111C40;
  --cobalt-950: #0B1228;
}
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