Palettes / Colors / #213973
#213973 — Blue
#213973 is a blue color we call 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 #213973 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.
#213973 is a cool blue color associated with trust, calm and professionalism. It sits comfortably in the middle: usable for large areas in soft schemes, or as a supporting color beside something stronger.
Its strongest partner is its complement #735A21; it also sits naturally between #216273 and #322173. In the palettes below you can see it working alongside real color combinations from our collection.
Color values
| HEX | #213973 |
|---|---|
| RGB | 33, 57, 115 |
| HSL | 222°, 55%, 29% |
| HSV | 222°, 71%, 45% |
| CMYK | 71%, 50%, 0%, 55% |
| XYZ | 5.18, 4.49, 16.81 |
| Yxy | 4.49, 0.1958, 0.1694 |
| CIE-Lab | 25.22, 11.95, -36.23 |
| Hunter Lab | 21.18, 7.87, -34.66 |
RGB & CMYK percentages
Red 13% · Green 22% · Blue 45%
Cyan 71% · Magenta 50% · Yellow 0% · Key 55%
CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.
Previews
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CSS code for #213973
.text { color: #213973; }
.background { background-color: #213973; }
.border { border: 3px solid #213973; }
.text-rgb { color: rgb(33, 57, 115); }
.text-hsl { color: hsl(222, 55%, 29%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #213973; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(33, 57, 115, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #213973; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(33, 57, 115, 0.8); }
HTML: <p style="color:#213973">Text here</p> · <div style="background-color:#213973">Div content here</div>
Shades of #213973
Tints of #213973
Tones of #213973
Color harmonies
Complementary — #735A21:
Analogous:
Triadic:
Contrast & accessibility
| Against white text | 11.07:1 AAA |
|---|---|
| Against black text | 1.90:1 Fails |
Best text color on #213973: #FFFFFF.
Semi-transparent (opacity) text on #213973
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 #213973: ·
How #213973 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 #213973 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 #213973?
#213973 is Blue, a blue color (RGB 33, 57, 115). Its closest standard named color is MidnightBlue.
What is the RGB and HSL of #213973?
#213973 is RGB 33, 57, 115 — HSL 222°, 55%, 29% — CMYK 71%, 50%, 0%, 55%.
What colors go with #213973?
Its complement is #735A21; analogous partners are #216273 and #322173. It also appears in 6+ palettes in our collection.
Can I use #213973 for text?
White text on #213973 has a contrast ratio of 11.07:1 (passes WCAG AA); black text gives 1.90:1.