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#51759A Color

#51759A is rgb(81, 117, 154) in RGB, hsl(210, 31%, 46%) in HSL, and about cmyk(47%, 24%, 0%, 40%) in CMYK. It has no registered color name of its own — the closest is Queen Blue (#436B95), clearly related but distinguishable side by side at ΔE 5.22. White text is the more readable choice on this background.

#51759A
HEX#51759A
RGBrgb(81, 117, 154)
HSLhsl(210, 31%, 46%)
HSVhsv(210, 47%, 60%)
CMYKcmyk(47%, 24%, 0%, 40%)
OKLCHoklch(55.1% 0.071 249.9)
LABlab(47.68% -5.19 -24.39)
LCHlch(47.68% 24.94 257.98)

What #51759A 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 #51759A, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Queen Blue#436B95ΔE 5.22Air Force Blue#5D8AA8ΔE 9.3Blue Yonder#5072A7ΔE 9.49Glaucous#6082B6ΔE 9.99Steel Blue#4682B4ΔE 9.99Silver Lake Blue#5D89BAΔE 10.07

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

#51759A Channel Values

How #51759A breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 81 · G 117 · B 1548-bit channels as sent to the display
HSLH 210° · S 31% · L 46%Easiest model for building lighter and darker variants
HSVH 210° · S 47% · V 60%Matches the picker in most design tools
CMYKC 47% · M 24% · Y 0% · K 40%Approximate ink mix; confirm with an ICC profile before printing
Luminance4.82:1 vs white · 4.36:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #51759A 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 text4.82:1AA normal AA large AAA normal
Fails AABlack text4.36:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #51759A in the contrast checker.

Colors That Go With #51759A

Pairings derived from color-wheel relationships. The complementary color sits opposite #51759A; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#51759A
Complementary
#9A7551
Analogous
#519A9A
Analogous
#51519A
Triadic
#9A5175
Triadic
#759A51
Split comp.
#9A5151
Split comp.
#9A9A51

Tints & Shades of #51759A

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

#6287AC
#7D9CBA
#94ADC7
#AFC2D5
#C6D4E1
#E1E8EF

Shades

#466686
#3C5772
#31475E
#273849
#1C2935
#121921

Want a full 50-950 ramp with semantic roles? Generate design tokens from #51759A.

How #51759A 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#51759A
Protanopia#70709A
Protanomaly#65729A
Deuteranopia#6B6B9B
Deuteranomaly#616F9A
Tritanopia#477A7A
Tritanomaly#4B7888
Achromatopsia#727272

Test a full palette in the color blindness simulator.

Using #51759A in Code

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

CSS custom property--color-51759a: #51759A;
CSS backgroundbackground-color: #51759A;
Tailwind configcolors: { 'color-51759a': '#51759A' }
SwiftUIColor(red: 0.318, green: 0.459, blue: 0.604)
Android XML<color name="color_51759a">#51759A</color>
SVG fillfill="#51759A"

More Blue Colors

#51759A sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#51759A Frequently Asked Questions

What color is #51759A?

#51759A is a mid-tone blue — rgb(81, 117, 154) in RGB and hsl(210, 31%, 46%) in HSL. It carries no registered color name of its own; the closest named color is Queen Blue (#436B95), which is clearly related but distinguishable side by side at a CIE76 distance of 5.22.

What is the RGB value of #51759A?

#51759A is rgb(81, 117, 154) — red 81, green 117, and blue 154 on the 0-255 scale.

What is the CMYK value of #51759A?

#51759A converts to approximately cmyk(47%, 24%, 0%, 40%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #51759A be black or white?

White text is the more readable choice. #51759A scores 4.82:1 against white and 4.36:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #51759A as a CSS color keyword?

No. #51759A 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 9.99, which is clearly related but distinguishable side by side.

Open #51759A in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

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