Palettes / Colors / #372FAC
#372FAC — Blue
#372FAC is a blue color we call Blue, closest to the named color DarkSlateBlue (#483D8B). It belongs to the blue family.
Color name
Closest CSS keyword: darkslateblue (#483D8B) — not an exact match. CSS darkslateblue gives you #483D8B, a different color; use #372FAC 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.
#372FAC 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 #A4AC2F; it also sits naturally between #2F65AC and #762FAC. In the palettes below you can see it working alongside real color combinations from our collection.
Color values
| HEX | #372FAC |
|---|---|
| RGB | 55, 47, 172 |
| HSL | 244°, 57%, 43% |
| HSV | 244°, 73%, 67% |
| CMYK | 68%, 73%, 0%, 33% |
| XYZ | 10.04, 5.82, 39.62 |
| Yxy | 5.82, 0.1809, 0.1050 |
| CIE-Lab | 28.96, 42.54, -65.27 |
| Hunter Lab | 24.13, 33.84, -84.92 |
RGB & CMYK percentages
Red 22% · Green 18% · Blue 67%
Cyan 68% · Magenta 73% · Yellow 0% · Key 33%
CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.
Previews
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CSS code for #372FAC
.text { color: #372FAC; }
.background { background-color: #372FAC; }
.border { border: 3px solid #372FAC; }
.text-rgb { color: rgb(55, 47, 172); }
.text-hsl { color: hsl(244, 57%, 43%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #372FAC; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(55, 47, 172, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #372FAC; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(55, 47, 172, 0.8); }
HTML: <p style="color:#372FAC">Text here</p> · <div style="background-color:#372FAC">Div content here</div>
Shades of #372FAC
Tints of #372FAC
Tones of #372FAC
Color harmonies
Complementary — #A4AC2F:
Analogous:
Triadic:
Contrast & accessibility
| Against white text | 9.70:1 AAA |
|---|---|
| Against black text | 2.16:1 Fails |
Best text color on #372FAC: #FFFFFF.
Semi-transparent (opacity) text on #372FAC
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 #372FAC: ·
How #372FAC 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 #372FAC 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 #372FAC?
#372FAC is Blue, a blue color (RGB 55, 47, 172). Its closest standard named color is DarkSlateBlue.
What is the RGB and HSL of #372FAC?
#372FAC is RGB 55, 47, 172 — HSL 244°, 57%, 43% — CMYK 68%, 73%, 0%, 33%.
What colors go with #372FAC?
Its complement is #A4AC2F; analogous partners are #2F65AC and #762FAC. It also appears in 6+ palettes in our collection.
Can I use #372FAC for text?
White text on #372FAC has a contrast ratio of 9.70:1 (passes WCAG AA); black text gives 2.16:1.