#668B8F Color

#668B8F is rgb(102, 139, 143) in RGB, hsl(186, 17%, 48%) in HSL, and about cmyk(29%, 3%, 0%, 44%) in CMYK. It has no registered color name of its own — the closest is Steel Teal (#5F8A8F), below the threshold most people can see at ΔE 2.19. Black text is the more readable choice on this background.

#668B8F

HEX#668B8F

RGBrgb(102, 139, 143)

HSLhsl(186, 17%, 48%)

HSVhsv(186, 29%, 56%)

CMYKcmyk(29%, 3%, 0%, 44%)

OKLCHoklch(61.1% 0.042 204.5)

LABlab(55.21% -12.60 -6.55)

LCHlch(55.21% 14.20 207.47)

What #668B8F 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 #668B8F, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Steel Teal#5F8A8FΔE 2.19 Cadet Blue#5F9EA0ΔE 10.04 Wintergreen Dream#56887DΔE 10.05 Light Slate Gray#778899ΔE 10.32 Slate Gray#708090ΔE 10.52 Pewter#899499ΔE 10.98

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

#668B8F Channel Values

How #668B8F 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 102 · G 139 · B 143	8-bit channels as sent to the display
HSL	H 186° · S 17% · L 48%	Easiest model for building lighter and darker variants
HSV	H 186° · S 29% · V 56%	Matches the picker in most design tools
CMYK	C 29% · M 3% · Y 0% · K 44%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	3.71:1 vs white · 5.65:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #668B8F 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 text3.71:1AA normal AA large AAA normal

TextBlack text5.65:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #668B8F in the contrast checker.

Colors That Go With #668B8F

Pairings derived from color-wheel relationships. The complementary color sits opposite #668B8F; 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 #668B8F

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 #668B8F.

How #668B8F 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#668B8F

Protanopia#86868F

Protanomaly#7A888F

Deuteranopia#808090

Deuteranomaly#77858F

Tritanopia#658C8C

Tritanomaly#668B8D

Achromatopsia#858585

Test a full palette in the color blindness simulator.

Using #668B8F in Code

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

CSS custom property--color-668b8f: #668B8F;

CSS backgroundbackground-color: #668B8F;

Tailwind configcolors: { 'color-668b8f': '#668B8F' }

SwiftUIColor(red: 0.400, green: 0.545, blue: 0.561)

Android XML<color name="color_668b8f">#668B8F</color>

SVG fillfill="#668B8F"

More Teal Colors

#668B8F 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

#668B8F Frequently Asked Questions

What color is #668B8F?

#668B8F is a mid-tone teal — rgb(102, 139, 143) in RGB and hsl(186, 17%, 48%) in HSL. It carries no registered color name of its own; the closest named color is Steel Teal (#5F8A8F), which is below the threshold most people can see at a CIE76 distance of 2.19.

What is the RGB value of #668B8F?

#668B8F is rgb(102, 139, 143) — red 102, green 139, and blue 143 on the 0-255 scale.

What is the CMYK value of #668B8F?

#668B8F converts to approximately cmyk(29%, 3%, 0%, 44%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #668B8F be black or white?

Black text is the more readable choice. #668B8F scores 3.71:1 against white and 5.65:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #668B8F as a CSS color keyword?

No. #668B8F 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 cadetblue (#5F9EA0) at a CIE76 distance of 10.04, which is visibly different.

Open #668B8F 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.