Palettes / Colors / #151CA4

#151CA4 — Blue

#151CA4 is a blue color we call Blue, closest to the named color DarkBlue (#00008B). It belongs to the blue family.

Color name

Closest CSS keyword: darkblue (#00008B) — not an exact match. CSS darkblue gives you #00008B, a different color; use #151CA4 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.

#151CA4 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 #A29B15; it also sits naturally between #1563A2 and #5515A2. In the palettes below you can see it working alongside real color combinations from our collection.

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Color values

RGB & CMYK percentages

Red 8% · Green 11% · Blue 64%

Cyan 87% · Magenta 83% · Yellow 0% · Key 36%

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

Previews

CSS code for #151CA4

.text { color: #151CA4; }
.background { background-color: #151CA4; }
.border { border: 3px solid #151CA4; }
.text-rgb { color: rgb(21, 28, 164); }
.text-hsl { color: hsl(237, 77%, 36%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #151CA4; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(21, 28, 164, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #151CA4; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(21, 28, 164, 0.8); }

HTML: <p style="color:#151CA4">Text here</p> · <div style="background-color:#151CA4">Div content here</div>

Shades of #151CA4

Tints of #151CA4

Tones of #151CA4

Color harmonies

Complementary — #A29B15:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #151CA4: #FFFFFF.

Semi-transparent (opacity) text on #151CA4

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 #151CA4 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 #151CA4 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

← #151CA3  ·  #151CA5 →

Frequently asked questions

What color is #151CA4?

#151CA4 is Blue, a blue color (RGB 21, 28, 164). Its closest standard named color is DarkBlue.

What is the RGB and HSL of #151CA4?

#151CA4 is RGB 21, 28, 164 — HSL 237°, 77%, 36% — CMYK 87%, 83%, 0%, 36%.

What colors go with #151CA4?

Its complement is #A29B15; analogous partners are #1563A2 and #5515A2. It also appears in 6+ palettes in our collection.

Can I use #151CA4 for text?

White text on #151CA4 has a contrast ratio of 12.11:1 (passes WCAG AA); black text gives 1.73:1.