#166D8D Color

#166D8D is rgb(22, 109, 141) in RGB, hsl(196, 73%, 32%) in HSL, and about cmyk(84%, 23%, 0%, 45%) in CMYK. It has no registered color name of its own — the closest is Blue Sapphire (#126180), very hard to tell apart at ΔE 4.97. White text is the more readable choice on this background.

#166D8D

HEX#166D8D

RGBrgb(22, 109, 141)

HSLhsl(196, 73%, 32%)

HSVhsv(196, 84%, 55%)

CMYKcmyk(84%, 23%, 0%, 45%)

OKLCHoklch(50.1% 0.092 228.8)

LABlab(42.39% -16.39 -25.09)

LCHlch(42.39% 29.97 236.84)

What #166D8D 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 #166D8D, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Blue Sapphire#126180ΔE 4.97 Sea Blue#006994ΔE 6.88 Teal Blue#367588ΔE 8.81 Cerulean#007BA7ΔE 8.88 Zircon Blue#00849DΔE 11.45 Queen Blue#436B95ΔE 12

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

#166D8D Channel Values

How #166D8D 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 22 · G 109 · B 141	8-bit channels as sent to the display
HSL	H 196° · S 73% · L 32%	Easiest model for building lighter and darker variants
HSV	H 196° · S 84% · V 55%	Matches the picker in most design tools
CMYK	C 84% · M 23% · Y 0% · K 45%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	5.82:1 vs white · 3.61:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #166D8D 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.

TextWhite text5.82:1AA normal AA large AAA normal

Fails AABlack text3.61:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #166D8D in the contrast checker.

Colors That Go With #166D8D

Pairings derived from color-wheel relationships. The complementary color sits opposite #166D8D; 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 #166D8D

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 #166D8D.

How #166D8D 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#166D8D

Protanopia#64648D

Protanomaly#50688D

Deuteranopia#5B5B8E

Deuteranomaly#49638E

Tritanopia#007272

Tritanomaly#00707E

Achromatopsia#656565

Test a full palette in the color blindness simulator.

Using #166D8D in Code

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

CSS custom property--color-166d8d: #166D8D;

CSS backgroundbackground-color: #166D8D;

Tailwind configcolors: { 'color-166d8d': '#166D8D' }

SwiftUIColor(red: 0.086, green: 0.427, blue: 0.553)

Android XML<color name="color_166d8d">#166D8D</color>

SVG fillfill="#166D8D"

More Teal Colors

#166D8D 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

#166D8D Frequently Asked Questions

What color is #166D8D?

#166D8D is a dark teal — rgb(22, 109, 141) in RGB and hsl(196, 73%, 32%) in HSL. It carries no registered color name of its own; the closest named color is Blue Sapphire (#126180), which is very hard to tell apart at a CIE76 distance of 4.97.

What is the RGB value of #166D8D?

#166D8D is rgb(22, 109, 141) — red 22, green 109, and blue 141 on the 0-255 scale.

What is the CMYK value of #166D8D?

#166D8D converts to approximately cmyk(84%, 23%, 0%, 45%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #166D8D be black or white?

White text is the more readable choice. #166D8D scores 5.82:1 against white and 3.61:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #166D8D as a CSS color keyword?

No. #166D8D 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 steelblue (#4682B4) at a CIE76 distance of 14.71, which is visibly different.

Open #166D8D in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

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