Cobalt
#284E8A
BlueColor Codes
All color formats for development
HEX
#284E8ARGB
rgb(40, 78, 138)HSL
hsl(217, 55%, 35%)OKLCH
oklch(0.428 0.109 259.2)CMYK
cmyk(71%, 43%, 0%, 46%)Accessibility
WCAG contrast compliance
Tailwind Scale
50-950 scale matching Tailwind CSS naming
Shades
Darker variations
1#24467D
2#203E6F
3#1C3661
4#182F53
5#142745
6#101F37
7#0C172A
8#08101C
9#04080E
Tints
Lighter variations
1#305CA4
2#376BBE
3#4B7CCB
4#658FD2
5#7FA1DA
6#98B4E1
7#B2C7E9
8#CCDAF0
9#E5ECF8
Tones
Muted variations
1#2D4F85
2#325081
3#37517C
4#3C5277
5#415472
6#46556D
7#4B5668
8#4F5763
9#54585E
Usage Guidelines
Recommended use cases for each shade level
| Level | Color | Typical Use Cases |
|---|---|---|
| 50 | F3F6 #F3F6FC | BackgroundsSubtle highlightsCard backgrounds |
| 100 | E3EB #E3EBF7 | Light backgroundsTable row hoverSkeleton loading |
| 200 | CCDA #CCDAF0 | Secondary backgroundsInput backgroundsDividers |
| 300 | A4BD #A4BDE5 | BordersInactive statesPlaceholder text |
| 400 | 759A #759AD7 | Disabled statesSecondary iconsMuted text |
| 500 | 4D7E #4D7ECB | Primary brand colorCTAsActive elementsLinks |
| 600 | 3262 #3262AE | Hover statesFocus ringsPrimary buttons hover |
| 700 | 284E #284E8A | Active/pressed statesDark mode accentsSecondary text |
| 800 | 1D38 #1D3863 | Text on light backgroundsHeadingsStrong borders |
| 900 | 1224 #12243F | Primary textHigh emphasis contentDark headings |
| 950 | 0B16 #0B1628 | Maximum contrast textDark mode backgrounds |
Export Code
Copy ready-to-use code for your project
:root {
--cobalt-50: #F3F6FC;
--cobalt-100: #E3EBF7;
--cobalt-200: #CCDAF0;
--cobalt-300: #A4BDE5;
--cobalt-400: #759AD7;
--cobalt-500: #4D7ECB;
--cobalt-600: #3262AE;
--cobalt-700: #284E8A;
--cobalt-800: #1D3863;
--cobalt-900: #12243F;
--cobalt-950: #0B1628;
}