Dark Blue #00008B
Dark Blue color codes
Dark Blue color meaning
Dark Blue is a deep and serious blue — a cool color at 27% lightness and 100% saturation. Like other blues, it is linked with trust, calm and dependability. It is the most widely liked color, which is why banks, tech companies and healthcare brands lean on it.
Because it is deep and serious, dark blue works best for text, headings, luxury branding, accent walls and evening wear. It is dark enough to use for text on a white page (15.3:1 contrast).
What colors go with Dark Blue?
Dark Blue pairs well with Olive, Cobalt, Indigo and Linen: Olive sits close to its opposite on the color wheel for strong contrast, Cobalt and Indigo are neighbors that keep a scheme calm, and Linen gives the eye somewhere to rest.
Build a full scheme around dark blue in the color matcher, blend it with another color in the color mixer, or copy ready-made HTML and CSS from the HTML color picker.
Dark Blue at a glance
| Color family | Blue · cool, deep and serious |
|---|---|
| CSS color name | Yes — darkblue works in CSS |
| As text on white | 15.30:1 — passes WCAG AAA |
| Best text on it | White (15.30:1) |
| For print (CMYK) | 100% cyan, 100% magenta, 0% yellow, 45% black |
| Full screen | Open the dark blue screen — fill your display or download it in 4K |
Contrast
Contrast ratio of Dark Blue against white and black text (WCAG 2.1 needs 4.5:1 for body text).
Shades, tints & tones
Color harmonies
Colors similar to Dark Blue
Dark Blue color FAQ
What is the hex code for Dark Blue?
Dark Blue is #00008B, which is rgb(0, 0, 139) and hsl(240, 100%, 27%). For print it is roughly C100 M100 Y0 K45.
What colors go with Dark Blue?
Dark Blue pairs well with Olive, Cobalt, Indigo, Linen. Olive gives the strongest contrast, being close to its complementary color. Neutrals such as Linen also work well alongside it.
Is Dark Blue a warm or cool color?
Dark Blue is a cool color: its hue is 240°, on the green, blue and violet side of the color wheel.
What text color looks best on Dark Blue?
White text, with a contrast ratio of 15.3:1, which meets WCAG AA for normal text. Dark Blue itself is also readable as text on white (15.3:1).