#00008BDarkblue is a vivid, fully saturated, dark cool blue (#00008B).
Darkblue is a dark, vivid, fully saturated take on blue. Colors in this range are commonly associated with trust, calm and competence, which makes darkblue a natural fit for corporate branding, links and interfaces that need to feel dependable.
With a 15.30:1 contrast ratio against white, darkblue is dark enough to carry white text at any size — use it confidently for buttons, headers and filled UI elements. Against black text it manages 1.37:1, so stick with white type on darkblue surfaces.
For pairings, the complement of darkblue sits at 60° — #8A8A00, close to olive — and delivers the strongest possible hue contrast; use it sparingly, in roughly a 90/10 split, so the two don't fight. For calmer schemes, the analogous colors 30° to either side keep the same cool temperature, while the triadic pair gives you a balanced three-color palette. All of these are computed for darkblue in the palettes below, with copy-ready codes.
Every palette below is computed from darkblue's position on the color wheel (hue 240°). Hover any swatch to see its code; click to copy.
Tints mix darkblue toward white; shades mix it toward black. Use the scale for hover states, borders and depth without leaving the hue.
WCAG 2.1 requires 4.5:1 for normal text (AA) and 3:1 for large text. Here's how darkblue performs, plus how it appears under the three main types of dichromatic color blindness (simulated approximation).
| Pairing | Ratio | Normal text | Large text |
|---|---|---|---|
| White text on Darkblue | 15.30:1 | AAA | AAA |
| Black text on Darkblue | 1.37:1 | Fail | Fail |
#000069#000061#004F49Copy-ready snippets. In CSS you can also use the keyword darkblue directly.
:root {
--darkblue: #00008B;
--darkblue-rgb: 0, 0, 139;
--darkblue-tint: #7373BF;
--darkblue-shade: #00004C;
}
.btn-darkblue {
background: var(--darkblue);
color: #ffffff;
}// tailwind.config.js
colors: {
'darkblue': {
DEFAULT: '#00008B',
light: '#7373BF',
dark: '#00004C',
},
}The closest CSS named colors by perceptual (Lab) distance.