#21C6FD Color

#21C6FD is rgb(33, 198, 253) in RGB, hsl(195, 98%, 56%) in HSL, and about cmyk(87%, 22%, 0%, 1%) in CMYK. It has no registered color name of its own — the closest is Vivid Sky Blue (#00CCFF), very hard to tell apart at ΔE 4.02. Black text is the more readable choice on this background.

#21C6FD

HEX#21C6FD

RGBrgb(33, 198, 253)

HSLhsl(195, 98%, 56%)

HSVhsv(195, 87%, 99%)

CMYKcmyk(87%, 22%, 0%, 1%)

OKLCHoklch(77.3% 0.145 227.8)

LABlab(74.05% -26.55 -39.04)

LCHlch(74.05% 47.22 235.78)

What #21C6FD Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #21C6FD, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Vivid Sky Blue#00CCFFΔE 4.02 Deep Sky Blue#00BFFFΔE 5.61 Blizzard Blue#50BFE6ΔE 10.12 Picton Blue#45B1E8ΔE 10.32 Cerulean (Crayola)#1DACD6ΔE 11.57 Twitter Blue#26A7DEΔE 12.08

Browse the full index of named colors A-Z or every teal in the library.

#21C6FD Channel Values

How #21C6FD breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 33 · G 198 · B 253	8-bit channels as sent to the display
HSL	H 195° · S 98% · L 56%	Easiest model for building lighter and darker variants
HSV	H 195° · S 87% · V 99%	Matches the picker in most design tools
CMYK	C 87% · M 22% · Y 0% · K 1%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	1.99:1 vs white · 10.56:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #21C6FD background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

Fails AAWhite text1.99:1AA normal AA large AAA normal

TextBlack text10.56:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #21C6FD in the contrast checker.

Colors That Go With #21C6FD

Pairings derived from color-wheel relationships. The complementary color sits opposite #21C6FD; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #21C6FD

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #21C6FD.

How #21C6FD Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#21C6FD

Protanopia#B7B7FD

Protanomaly#92BDFD

Deuteranopia#A6A6FF

Deuteranomaly#85B4FE

Tritanopia#00CECE

Tritanomaly#00CBE2

Achromatopsia#B8B8B8

Test a full palette in the color blindness simulator.

Using #21C6FD in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-21c6fd: #21C6FD;

CSS backgroundbackground-color: #21C6FD;

Tailwind configcolors: { 'color-21c6fd': '#21C6FD' }

SwiftUIColor(red: 0.129, green: 0.776, blue: 0.992)

Android XML<color name="color_21c6fd">#21C6FD</color>

SVG fillfill="#21C6FD"

More Teal Colors

#21C6FD sits in the teal family. These are its neighbours across that family's full range, each with its own breakdown.

002424 f5ffff 002a38 f0ffff 002d2e eefbfb 003333 ecfeff 003542 ecf7f9 003838 ebffff 006466 009999 00ebeb 0d1616 192929 24fbff 36747d 50bfe6 73a9c2 8dd9cc aec6cf ccffff

#21C6FD Frequently Asked Questions

What color is #21C6FD?

#21C6FD is a mid-tone teal — rgb(33, 198, 253) in RGB and hsl(195, 98%, 56%) in HSL. It carries no registered color name of its own; the closest named color is Vivid Sky Blue (#00CCFF), which is very hard to tell apart at a CIE76 distance of 4.02.

What is the RGB value of #21C6FD?

#21C6FD is rgb(33, 198, 253) — red 33, green 198, and blue 253 on the 0-255 scale.

What is the CMYK value of #21C6FD?

#21C6FD converts to approximately cmyk(87%, 22%, 0%, 1%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #21C6FD be black or white?

Black text is the more readable choice. #21C6FD scores 1.99:1 against white and 10.56:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #21C6FD as a CSS color keyword?

No. #21C6FD is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is deepskyblue (#00BFFF) at a CIE76 distance of 5.61, which is clearly related but distinguishable side by side.

Open #21C6FD in a Tool

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Keep exploring: every teal in the color library, the guide to shades of teal, or the full color library.