#399CA7 Color

#399CA7 is rgb(57, 156, 167) in RGB, hsl(186, 49%, 44%) in HSL, and about cmyk(66%, 7%, 0%, 35%) in CMYK. It has no registered color name of its own — the closest is Blue Lagoon (#4C9C9C), clearly related but distinguishable side by side at ΔE 6.94. Black text is the more readable choice on this background.

#399CA7

HEX#399CA7

RGBrgb(57, 156, 167)

HSLhsl(186, 49%, 44%)

HSVhsv(186, 66%, 65%)

CMYKcmyk(66%, 7%, 0%, 35%)

OKLCHoklch(64% 0.091 205.5)

LABlab(59.05% -26.96 -14.73)

LCHlch(59.05% 30.72 208.64)

What #399CA7 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 #399CA7, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Blue Lagoon#4C9C9CΔE 6.94 Viridian Green#009698ΔE 8.2 Moonstone#3AA8C1ΔE 9.01 Cadet Blue#5F9EA0ΔE 9.5 Dark Cyan#008B8BΔE 10.29 Blue (Munsell)#0093AFΔE 10.46

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

#399CA7 Channel Values

How #399CA7 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 57 · G 156 · B 167	8-bit channels as sent to the display
HSL	H 186° · S 49% · L 44%	Easiest model for building lighter and darker variants
HSV	H 186° · S 66% · V 65%	Matches the picker in most design tools
CMYK	C 66% · M 7% · Y 0% · K 35%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	3.24:1 vs white · 6.49:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #399CA7 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 text3.24:1AA normal AA large AAA normal

TextBlack text6.49:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #399CA7 in the contrast checker.

Colors That Go With #399CA7

Pairings derived from color-wheel relationships. The complementary color sits opposite #399CA7; 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 #399CA7

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 #399CA7.

How #399CA7 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#399CA7

Protanopia#9191A7

Protanomaly#7795A7

Deuteranopia#8585A9

Deuteranomaly#6F8FA8

Tritanopia#349D9D

Tritanomaly#369DA1

Achromatopsia#8F8F8F

Test a full palette in the color blindness simulator.

Using #399CA7 in Code

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

CSS custom property--color-399ca7: #399CA7;

CSS backgroundbackground-color: #399CA7;

Tailwind configcolors: { 'color-399ca7': '#399CA7' }

SwiftUIColor(red: 0.224, green: 0.612, blue: 0.655)

Android XML<color name="color_399ca7">#399CA7</color>

SVG fillfill="#399CA7"

More Teal Colors

#399CA7 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

#399CA7 Frequently Asked Questions

What color is #399CA7?

#399CA7 is a mid-tone teal — rgb(57, 156, 167) in RGB and hsl(186, 49%, 44%) in HSL. It carries no registered color name of its own; the closest named color is Blue Lagoon (#4C9C9C), which is clearly related but distinguishable side by side at a CIE76 distance of 6.94.

What is the RGB value of #399CA7?

#399CA7 is rgb(57, 156, 167) — red 57, green 156, and blue 167 on the 0-255 scale.

What is the CMYK value of #399CA7?

#399CA7 converts to approximately cmyk(66%, 7%, 0%, 35%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #399CA7 be black or white?

Black text is the more readable choice. #399CA7 scores 3.24:1 against white and 6.49:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #399CA7 as a CSS color keyword?

No. #399CA7 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 9.5, which is clearly related but distinguishable side by side.

Open #399CA7 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.