#51879E Color

#51879E is rgb(81, 135, 158) in RGB, hsl(198, 32%, 47%) in HSL, and about cmyk(49%, 15%, 0%, 38%) in CMYK. It has no registered color name of its own — the closest is Air Force Blue (#5D8AA8), clearly related but distinguishable side by side at ΔE 5.26. Black text is the more readable choice on this background.

#51879E

HEX#51879E

RGBrgb(81, 135, 158)

HSLhsl(198, 32%, 47%)

HSVhsv(198, 49%, 62%)

CMYKcmyk(49%, 15%, 0%, 38%)

OKLCHoklch(59.5% 0.067 227.2)

LABlab(53.25% -13.72 -18.23)

LCHlch(53.25% 22.82 233.03)

What #51879E 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 #51879E, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Air Force Blue#5D8AA8ΔE 5.26 Teal Blue#367588ΔE 8.14 Steel Teal#5F8A8FΔE 10.65 Shadow Blue#778BA5ΔE 11.7 Ming#36747DΔE 11.77 Air Superiority Blue#72A0C1ΔE 11.78

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

#51879E Channel Values

How #51879E 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 81 · G 135 · B 158	8-bit channels as sent to the display
HSL	H 198° · S 32% · L 47%	Easiest model for building lighter and darker variants
HSV	H 198° · S 49% · V 62%	Matches the picker in most design tools
CMYK	C 49% · M 15% · Y 0% · K 38%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	3.96:1 vs white · 5.31:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #51879E 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 text3.96:1AA normal AA large AAA normal

TextBlack text5.31:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #51879E in the contrast checker.

Colors That Go With #51879E

Pairings derived from color-wheel relationships. The complementary color sits opposite #51879E; 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 #51879E

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 #51879E.

How #51879E 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#51879E

Protanopia#80809E

Protanomaly#70839E

Deuteranopia#78789F

Deuteranomaly#6B7F9F

Tritanopia#4B8A8A

Tritanomaly#4D8993

Achromatopsia#808080

Test a full palette in the color blindness simulator.

Using #51879E in Code

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

CSS custom property--color-51879e: #51879E;

CSS backgroundbackground-color: #51879E;

Tailwind configcolors: { 'color-51879e': '#51879E' }

SwiftUIColor(red: 0.318, green: 0.529, blue: 0.620)

Android XML<color name="color_51879e">#51879E</color>

SVG fillfill="#51879E"

More Teal Colors

#51879E 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

#51879E Frequently Asked Questions

What color is #51879E?

#51879E is a mid-tone teal — rgb(81, 135, 158) in RGB and hsl(198, 32%, 47%) in HSL. It carries no registered color name of its own; the closest named color is Air Force Blue (#5D8AA8), which is clearly related but distinguishable side by side at a CIE76 distance of 5.26.

What is the RGB value of #51879E?

#51879E is rgb(81, 135, 158) — red 81, green 135, and blue 158 on the 0-255 scale.

What is the CMYK value of #51879E?

#51879E converts to approximately cmyk(49%, 15%, 0%, 38%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #51879E be black or white?

Black text is the more readable choice. #51879E scores 3.96:1 against white and 5.31:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #51879E as a CSS color keyword?

No. #51879E 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 lightslategray (#778899) at a CIE76 distance of 12.65, which is visibly different.

Open #51879E 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.