Palettes / Colors / #123773
#123773 — Deep Blue
#123773 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 #123773 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.
#123773 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 #734E12; it also sits naturally between #126773 and #1D1273. In the palettes below you can see it working alongside real color combinations from our collection.
Color values
| HEX | #123773 |
|---|---|
| RGB | 18, 55, 115 |
| HSL | 217°, 73%, 26% |
| HSV | 217°, 84%, 45% |
| CMYK | 84%, 52%, 0%, 55% |
| XYZ | 4.71, 4.10, 16.76 |
| Yxy | 4.10, 0.1842, 0.1603 |
| CIE-Lab | 24.00, 11.26, -38.23 |
| Hunter Lab | 20.25, 7.29, -37.41 |
RGB & CMYK percentages
Red 7% · Green 22% · Blue 45%
Cyan 84% · Magenta 52% · Yellow 0% · Key 55%
CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.
Previews
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
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CSS code for #123773
.text { color: #123773; }
.background { background-color: #123773; }
.border { border: 3px solid #123773; }
.text-rgb { color: rgb(18, 55, 115); }
.text-hsl { color: hsl(217, 73%, 26%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #123773; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(18, 55, 115, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #123773; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(18, 55, 115, 0.8); }
HTML: <p style="color:#123773">Text here</p> · <div style="background-color:#123773">Div content here</div>
Shades of #123773
Tints of #123773
Tones of #123773
Color harmonies
Complementary — #734E12:
Analogous:
Triadic:
Contrast & accessibility
| Against white text | 11.54:1 AAA |
|---|---|
| Against black text | 1.82:1 Fails |
Best text color on #123773: #FFFFFF.
Semi-transparent (opacity) text on #123773
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:
Smaller body text shows the effect best.
Blended color: · Contrast against #123773: ·
How #123773 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 #123773 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
Frequently asked questions
What color is #123773?
#123773 is Deep Blue, a blue color (RGB 18, 55, 115). Its closest standard named color is MidnightBlue.
What is the RGB and HSL of #123773?
#123773 is RGB 18, 55, 115 — HSL 217°, 73%, 26% — CMYK 84%, 52%, 0%, 55%.
What colors go with #123773?
Its complement is #734E12; analogous partners are #126773 and #1D1273. It also appears in 6+ palettes in our collection.
Can I use #123773 for text?
White text on #123773 has a contrast ratio of 11.54:1 (passes WCAG AA); black text gives 1.82:1.