Ball Blue (#21ABCD)

HEX, RGB, HSL, CMYK values + mood/style/use-case color tags. Use this page to keep your colors consistent across web and print.

Preview

Sample Text

This is how text may look on this color.

Best text color: #000000
Contrast vs white: 2.70:1 — vs black: 7.77:1

Color values

HEX #21ABCD
RGB rgb(33, 171, 205)
HSL hsl(191, 83%, 80%)
CMYK cmyk( 83.9, 16.59, 0, 19.61 )
Websafe #3399CC

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Tags

Mood

Style

Use case

Text (210) Button (200) Background (190)

Tip: tags are heuristic suggestions (helpful for browsing and inspiration).

Color Harmonies

Colors that pair well with #21ABCD based on color theory relationships.

Complementary

The color directly opposite on the color wheel — creates maximum contrast and vibrance.

Ball Blue
#21ABCD Base

#CD4321

Analogous

Colors adjacent on the wheel — naturally harmonious and pleasing to the eye.

Ball Blue
#21ABCD Base

#21CD99

#2155CD

Triadic

Three colors equally spaced 120° apart — bold, balanced, and visually rich.

Ball Blue
#21ABCD Base

#CD21AB

#ABCD21

Split-Complementary

Two colors flanking the complement — high contrast with less tension than full complementary.

Ball Blue
#21ABCD Base

#CD2155

#CD9921

Tetradic (Square)

Four colors at 90° intervals — rich variety, best when one color dominates.

Ball Blue
#21ABCD Base

#9921CD

#CD4321

#55CD21

Monochromatic

Shades and tints of the same hue — cohesive, elegant, and easy to work with.

Ball Blue
#21ABCD Base

#0C3D49

#16748B

#1B8EAA

#38BEDF

#57C8E4

#99DDEF

Shades & Tints

Darker shades and lighter tints of Ball Blue, generated by adjusting lightness while keeping the same hue and saturation.

Shades (darker)

— #041216

— #09313B

— #0F4F5F

— #156E84

— #1B8CA8

Ball Blue #21ABCD Base

— #3FC0E0

— #6ACEE7

— #94DCEE

— #BFEAF5

— #E9F8FB

CSS & SCSS Snippets

Ready-to-use code snippets for #21ABCD. Click the copy button to copy any snippet to your clipboard.

/* Background */
.element {
    background-color: #21ABCD;
}

/* Text */
.element {
    color: #21ABCD;
}

/* Border */
.element {
    border: 1px solid #21ABCD;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #21ABCD,
        #F7B4A3
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #21ABCD,
        #F7B4A3
    );
}

// SCSS variable
$ball-blue: #21ABCD;

// With RGB channels (useful for rgba() usage)
$ball-blue-r: 33;
$ball-blue-g: 171;
$ball-blue-b: 205;

// Usage
.element {
    background-color: $ball-blue;
    color: rgba($ball-blue-r, $ball-blue-g, $ball-blue-b, 0.8);
}

Color Blindness Simulation

How Ball Blue appears to people with different types of color vision deficiency.

Normal Vision #21ABCD How the color appears with full color vision.

Deuteranopia #9393CE Deuteranopia affects ~8% of males. Green cones are absent, making it difficult to distinguish red from green. The most common form of color blindness.

Protanopia #A3A3CD Protanopia affects ~1% of males. Red cones are absent, causing reds to appear dark and indistinguishable from greens and browns.

Tritanopia #00B0B0 Tritanopia is rare (~0.003%). Blue cones are absent, making blue and yellow difficult to distinguish. Blues may appear green, yellows appear pink.

Achromatopsia #9D9D9D Achromatopsia is complete color blindness. The world is seen entirely in shades of grey. Affects ~1 in 30,000 people.

Similar Named Colors

The closest named colors to Ball Blue ranked by perceptual difference (Delta-E 2000 — lower = more similar).

Ball Blue #21ABCD Base

Pacific Blue #1CA9C9 ΔE 0.93

Bright Cerulean #1DACD6 ΔE 2.40

Cyan (process) #00B7EB ΔE 5.71

Blue Green #0D98BA ΔE 5.90

How to use this color

Copy HEX for CSS and design tools, or RGB/HSL for UI adjustments.
Use CMYK when preparing print assets (posters, packaging, brochures).
Check contrast before using it for text or important UI elements.