Cobalt
#284F8A
BlueColor Codes
All color formats for development
HEX
#284F8ARGB
rgb(40, 79, 138)HSL
hsl(216, 55%, 35%)OKLCH
oklch(0.431 0.108 258.5)CMYK
cmyk(71%, 43%, 0%, 46%)Accessibility
WCAG contrast compliance
Tailwind Scale
50-950 scale matching Tailwind CSS naming
Shades
Darker variations
1#24477D
2#20406F
3#1C3861
4#183053
5#142845
6#102037
7#0C182A
8#08101C
9#04080E
Tints
Lighter variations
1#305EA4
2#376DBE
3#4B7ECB
4#6591D2
5#7FA3DA
6#98B5E1
7#B2C8E9
8#CCDAF0
9#E5EDF8
Tones
Muted variations
1#2D5085
2#325181
3#37527C
4#3C5377
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 | F3F7 #F3F7FC | BackgroundsSubtle highlightsCard backgrounds |
| 100 | E3EB #E3EBF7 | Light backgroundsTable row hoverSkeleton loading |
| 200 | CCDA #CCDAF0 | Secondary backgroundsInput backgroundsDividers |
| 300 | A4BE #A4BEE5 | BordersInactive statesPlaceholder text |
| 400 | 759C #759CD7 | Disabled statesSecondary iconsMuted text |
| 500 | 4D80 #4D80CB | Primary brand colorCTAsActive elementsLinks |
| 600 | 3264 #3264AE | Hover statesFocus ringsPrimary buttons hover |
| 700 | 284F #284F8A | Active/pressed statesDark mode accentsSecondary text |
| 800 | 1D39 #1D3963 | Text on light backgroundsHeadingsStrong borders |
| 900 | 1224 #12243F | Primary textHigh emphasis contentDark headings |
| 950 | 0B17 #0B1728 | Maximum contrast textDark mode backgrounds |
Export Code
Copy ready-to-use code for your project
:root {
--cobalt-50: #F3F7FC;
--cobalt-100: #E3EBF7;
--cobalt-200: #CCDAF0;
--cobalt-300: #A4BEE5;
--cobalt-400: #759CD7;
--cobalt-500: #4D80CB;
--cobalt-600: #3264AE;
--cobalt-700: #284F8A;
--cobalt-800: #1D3963;
--cobalt-900: #12243F;
--cobalt-950: #0B1728;
}