Palettes / Colors / #21189E

#21189E — Blue

#21189E 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 #21189E 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.

#21189E 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 #97A018; it also sits naturally between #1853A0 and #6518A0. 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 13% · Green 9% · Blue 62%

Cyan 79% · Magenta 85% · Yellow 0% · Key 38%

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

Previews

CSS code for #21189E

.text { color: #21189E; }
.background { background-color: #21189E; }
.border { border: 3px solid #21189E; }
.text-rgb { color: rgb(33, 24, 158); }
.text-hsl { color: hsl(244, 74%, 36%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #21189E; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(33, 24, 158, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #21189E; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(33, 24, 158, 0.8); }

HTML: <p style="color:#21189E">Text here</p> · <div style="background-color:#21189E">Div content here</div>

Shades of #21189E

Tints of #21189E

Tones of #21189E

Color harmonies

Complementary — #97A018:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #21189E: #FFFFFF.

Semi-transparent (opacity) text on #21189E

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 #21189E 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 #21189E 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

← #21189D  ·  #21189F →

Frequently asked questions

What color is #21189E?

#21189E is Blue, a blue color (RGB 33, 24, 158). Its closest standard named color is DarkBlue.

What is the RGB and HSL of #21189E?

#21189E is RGB 33, 24, 158 — HSL 244°, 74%, 36% — CMYK 79%, 85%, 0%, 38%.

What colors go with #21189E?

Its complement is #97A018; analogous partners are #1853A0 and #6518A0. It also appears in 6+ palettes in our collection.

Can I use #21189E for text?

White text on #21189E has a contrast ratio of 12.43:1 (passes WCAG AA); black text gives 1.69:1.