Palettes / Colors / #1B00A6

#1B00A6 — Vivid Blue

#1B00A6 is a blue color we call Vivid 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 #1B00A6 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.

#1B00A6 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 #8CA800; it also sits naturally between #0038A8 and #7000A8. 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 11% · Green 0% · Blue 65%

Cyan 84% · Magenta 100% · Yellow 0% · Key 35%

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

Previews

CSS code for #1B00A6

.text { color: #1B00A6; }
.background { background-color: #1B00A6; }
.border { border: 3px solid #1B00A6; }
.text-rgb { color: rgb(27, 0, 166); }
.text-hsl { color: hsl(250, 100%, 33%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #1B00A6; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(27, 0, 166, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #1B00A6; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(27, 0, 166, 0.8); }

HTML: <p style="color:#1B00A6">Text here</p> · <div style="background-color:#1B00A6">Div content here</div>

Shades of #1B00A6

Tints of #1B00A6

Tones of #1B00A6

Color harmonies

Complementary — #8CA800:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #1B00A6: #FFFFFF.

Semi-transparent (opacity) text on #1B00A6

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 #1B00A6 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 #1B00A6 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

← #1B00A5  ·  #1B00A7 →

Frequently asked questions

What color is #1B00A6?

#1B00A6 is Vivid Blue, a blue color (RGB 27, 0, 166). Its closest standard named color is DarkBlue.

What is the RGB and HSL of #1B00A6?

#1B00A6 is RGB 27, 0, 166 — HSL 250°, 100%, 33% — CMYK 84%, 100%, 0%, 35%.

What colors go with #1B00A6?

Its complement is #8CA800; analogous partners are #0038A8 and #7000A8. It also appears in 6+ palettes in our collection.

Can I use #1B00A6 for text?

White text on #1B00A6 has a contrast ratio of 13.15:1 (passes WCAG AA); black text gives 1.60:1.