Palettes / Colors / #123778

#123778 — Deep Blue

#123778 is a blue color we call Deep Blue, closest to the named color MidnightBlue (#191970). It belongs to the blue family.

Color name

Closest CSS keyword: midnightblue (#191970) — not an exact match. CSS midnightblue gives you #191970, a different color; use #123778 when you need this exact shade.

Sources: common names follow widely used color-name references; CSS keywords and their hex values follow the CSS Color specification.

#123778 is a cool blue color associated with trust, calm and professionalism. It is saturated enough to be the accent — buttons, highlights and calls to action — while neutrals do the quiet work around it.

Its strongest partner is its complement #785212; it also sits naturally between #126A78 and #1F1278. In the palettes below you can see it working alongside real color combinations from our collection.

Copy HEX Copy RGB Copy HSL Download PNG swatch SVG

Color values

RGB & CMYK percentages

Red 7% · Green 22% · Blue 47%

Cyan 85% · Magenta 54% · Yellow 0% · Key 53%

CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.

Previews

CSS code for #123778

.text { color: #123778; }
.background { background-color: #123778; }
.border { border: 3px solid #123778; }
.text-rgb { color: rgb(18, 55, 120); }
.text-hsl { color: hsl(218, 74%, 27%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #123778; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(18, 55, 120, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #123778; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(18, 55, 120, 0.8); }

HTML: <p style="color:#123778">Text here</p> · <div style="background-color:#123778">Div content here</div>

Shades of #123778

Tints of #123778

Tones of #123778

Color harmonies

Complementary — #785212:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #123778: #FFFFFF.

Semi-transparent (opacity) text on #123778

Text set with opacity blends into the background, so its real contrast is lower than the solid ratios above. Choose a text color and an opacity to see the blended color and its true ratio:

How #123778 looks with color blindness

Simulated with standard Machado color-vision-deficiency matrices — useful when this color carries meaning in charts, maps or interfaces:

Closest design-system colors

The nearest matches in the Tailwind CSS, Material Design and Bootstrap palettes — handy when you need a framework class instead of a raw hex:

Palettes with a similar color

These palettes use a close neighbour of #123778 rather than the exact color:

Similar colors

The closest colors that actually appear in our palette collection — click any to open its page:

Browse neighbouring colors

← #123777  ·  #123779 →

Frequently asked questions

What color is #123778?

#123778 is Deep Blue, a blue color (RGB 18, 55, 120). Its closest standard named color is MidnightBlue.

What is the RGB and HSL of #123778?

#123778 is RGB 18, 55, 120 — HSL 218°, 74%, 27% — CMYK 85%, 54%, 0%, 53%.

What colors go with #123778?

Its complement is #785212; analogous partners are #126A78 and #1F1278. It also appears in 6+ palettes in our collection.

Can I use #123778 for text?

White text on #123778 has a contrast ratio of 11.39:1 (passes WCAG AA); black text gives 1.84:1.