#4F5B66 Color

#4F5B66 is rgb(79, 91, 102) in RGB, hsl(209, 13%, 35%) in HSL, and about cmyk(23%, 11%, 0%, 60%) in CMYK. It has no registered color name of its own — the closest is Black Coral (#54626F), very hard to tell apart at ΔE 3.1. White text is the more readable choice on this background.

#4F5B66

HEX#4F5B66

RGBrgb(79, 91, 102)

HSLhsl(209, 13%, 35%)

HSVhsv(209, 23%, 40%)

CMYKcmyk(23%, 11%, 0%, 60%)

OKLCHoklch(46.5% 0.023 246)

LABlab(37.92% -2.80 -7.99)

LCHlch(37.92% 8.46 250.65)

What #4F5B66 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 #4F5B66, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Black Coral#54626FΔE 3.1 Iron Gray#555D61ΔE 4.66 Cadet#536872ΔE 5.79 Deep Space Sparkle#4A646CΔE 6.18 Dark Electric Blue#536878ΔE 6.48 Davy's Gray#555555ΔE 8.65

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

#4F5B66 Channel Values

How #4F5B66 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 79 · G 91 · B 102	8-bit channels as sent to the display
HSL	H 209° · S 13% · L 35%	Easiest model for building lighter and darker variants
HSV	H 209° · S 23% · V 40%	Matches the picker in most design tools
CMYK	C 23% · M 11% · Y 0% · K 60%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	6.95:1 vs white · 3.02:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #4F5B66 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 text6.95:1AA normal AA large AAA normal

Fails AABlack text3.02:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #4F5B66 in the contrast checker.

Colors That Go With #4F5B66

Pairings derived from color-wheel relationships. The complementary color sits opposite #4F5B66; 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 #4F5B66

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 #4F5B66.

How #4F5B66 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#4F5B66

Protanopia#595966

Protanomaly#555A66

Deuteranopia#575766

Deuteranomaly#545966

Tritanopia#4D5C5C

Tritanomaly#4E5C60

Achromatopsia#595959

Test a full palette in the color blindness simulator.

Using #4F5B66 in Code

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

CSS custom property--color-4f5b66: #4F5B66;

CSS backgroundbackground-color: #4F5B66;

Tailwind configcolors: { 'color-4f5b66': '#4F5B66' }

SwiftUIColor(red: 0.310, green: 0.357, blue: 0.400)

Android XML<color name="color_4f5b66">#4F5B66</color>

SVG fillfill="#4F5B66"

More Blue Colors

#4F5B66 sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

4f69c6 4f39f6 4f86f7 4e5180 5072a7 4e3cc3 51a2ff 4d4dff 525e6b 4c516d 5271ff 4b9cd3 657586 7ba4ef 9999eb bbcce2 dad6ff f5faff 000f89 0073e6 0e1b25 1a4065 273be2 364153

#4F5B66 Frequently Asked Questions

What color is #4F5B66?

#4F5B66 is a dark blue — rgb(79, 91, 102) in RGB and hsl(209, 13%, 35%) in HSL. It carries no registered color name of its own; the closest named color is Black Coral (#54626F), which is very hard to tell apart at a CIE76 distance of 3.1.

What is the RGB value of #4F5B66?

#4F5B66 is rgb(79, 91, 102) — red 79, green 91, and blue 102 on the 0-255 scale.

What is the CMYK value of #4F5B66?

#4F5B66 converts to approximately cmyk(23%, 11%, 0%, 60%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #4F5B66 be black or white?

White text is the more readable choice. #4F5B66 scores 6.95:1 against white and 3.02:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #4F5B66 as a CSS color keyword?

No. #4F5B66 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 dimgray (#696969) at a CIE76 distance of 10.67, which is visibly different.

Open #4F5B66 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 blue in the color library, the guide to shades of blue, or the full color library.