Cobalt

#253A8D

Blue

Color Codes

All color formats for development

HEX
#253A8D
RGB
rgb(37, 58, 141)
HSL
hsl(228, 58%, 35%)
OKLCH
oklch(0.385 0.14 268.3)
CMYK
cmyk(74%, 59%, 0%, 45%)

Accessibility

WCAG contrast compliance

On White Background

10.15:1

AA AAA

On Black Background

2.07:1

AA AAA
Run full accessibility check

Tailwind Scale

50-950 scale matching Tailwind CSS naming

50
#F3F5
100
#E3E7
200
#CBD2
300
#A2B0
400
#7287
500
#4A64
600
#2F49
700
#253A
800
#1B2A
900
#111B
950
#0B11

Shades

Darker variations

1#22347F
2#1E2F71
3#1A2963
4#162355
5#131D47
6#0F1738
7#0B112A
8#070C1C
9#04060E

Tints

Lighter variations

1#2C45A7
2#3350C1
3#4863CE
4#6279D5
5#7C8FDC
6#96A6E3
7#B0BCEA
8#CBD2F1
9#E5E9F8

Tones

Muted variations

1#2B3D88
2#304083
3#35447D
4#3A4778
5#3F4A73
6#454D6E
7#4A5069
8#4F5364
9#54565E

Usage Guidelines

Recommended use cases for each shade level

LevelColorTypical Use Cases
50
F3F5
#F3F5FC
BackgroundsSubtle highlightsCard backgrounds
100
E3E7
#E3E7F8
Light backgroundsTable row hoverSkeleton loading
200
CBD2
#CBD2F1
Secondary backgroundsInput backgroundsDividers
300
A2B0
#A2B0E6
BordersInactive statesPlaceholder text
400
7287
#7287DA
Disabled statesSecondary iconsMuted text
500
4A64
#4A64CF
Primary brand colorCTAsActive elementsLinks
600
2F49
#2F49B1
Hover statesFocus ringsPrimary buttons hover
700
253A
#253A8D
Active/pressed statesDark mode accentsSecondary text
800
1B2A
#1B2A65
Text on light backgroundsHeadingsStrong borders
900
111B
#111B40
Primary textHigh emphasis contentDark headings
950
0B11
#0B1128
Maximum contrast textDark mode backgrounds

Export Code

Copy ready-to-use code for your project

:root {
  --cobalt-50: #F3F5FC;
  --cobalt-100: #E3E7F8;
  --cobalt-200: #CBD2F1;
  --cobalt-300: #A2B0E6;
  --cobalt-400: #7287DA;
  --cobalt-500: #4A64CF;
  --cobalt-600: #2F49B1;
  --cobalt-700: #253A8D;
  --cobalt-800: #1B2A65;
  --cobalt-900: #111B40;
  --cobalt-950: #0B1128;
}
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