Cobalt
#283D8A
BlueColor Codes
All color formats for development
HEX
#283D8ARGB
rgb(40, 61, 138)HSL
hsl(227, 55%, 35%)OKLCH
oklch(0.39 0.131 268.2)CMYK
cmyk(71%, 56%, 0%, 46%)Accessibility
WCAG contrast compliance
Tailwind Scale
50-950 scale matching Tailwind CSS naming
Shades
Darker variations
1#24377D
2#20316F
3#1C2B61
4#182553
5#141F45
6#101937
7#0C122A
8#080C1C
9#04060E
Tints
Lighter variations
1#3049A4
2#3754BE
3#4B67CB
4#657DD2
5#7F92DA
6#98A8E1
7#B2BEE9
8#CCD4F0
9#E5E9F8
Tones
Muted variations
1#2D4085
2#324381
3#37467C
4#3C4977
5#414B72
6#464E6D
7#4B5168
8#4F5463
9#54565E
Usage Guidelines
Recommended use cases for each shade level
| Level | Color | Typical Use Cases |
|---|---|---|
| 50 | F3F5 #F3F5FC | BackgroundsSubtle highlightsCard backgrounds |
| 100 | E3E8 #E3E8F7 | Light backgroundsTable row hoverSkeleton loading |
| 200 | CCD4 #CCD4F0 | Secondary backgroundsInput backgroundsDividers |
| 300 | A4B2 #A4B2E5 | BordersInactive statesPlaceholder text |
| 400 | 758A #758AD7 | Disabled statesSecondary iconsMuted text |
| 500 | 4D68 #4D68CB | Primary brand colorCTAsActive elementsLinks |
| 600 | 324D #324DAE | Hover statesFocus ringsPrimary buttons hover |
| 700 | 283D #283D8A | Active/pressed statesDark mode accentsSecondary text |
| 800 | 1D2C #1D2C63 | Text on light backgroundsHeadingsStrong borders |
| 900 | 121C #121C3F | 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: #E3E8F7;
--cobalt-200: #CCD4F0;
--cobalt-300: #A4B2E5;
--cobalt-400: #758AD7;
--cobalt-500: #4D68CB;
--cobalt-600: #324DAE;
--cobalt-700: #283D8A;
--cobalt-800: #1D2C63;
--cobalt-900: #121C3F;
--cobalt-950: #0B1228;
}