Skip to content

#5781FF Color

#5781FF is rgb(87, 129, 255) in RGB, hsl(225, 100%, 67%) in HSL, and about cmyk(66%, 49%, 0%, 0%) in CMYK. It has no registered color name of its own — the closest is Blueberry (#4F86F7), clearly related but distinguishable side by side at ΔE 8.4. Black text is the more readable choice on this background.

#5781FF
HEX#5781FF
RGBrgb(87, 129, 255)
HSLhsl(225, 100%, 67%)
HSVhsv(225, 66%, 100%)
CMYKcmyk(66%, 49%, 0%, 0%)
OKLCHoklch(63.9% 0.193 267)
LABlab(56.01% 16.40 -68.44)
LCHlch(56.01% 70.38 283.48)

What #5781FF 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 #5781FF, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Blueberry#4F86F7ΔE 8.4Royal Blue#4169E1ΔE 9.48Bluetiful#3C69E7ΔE 9.49Blue (Crayola)#1F75FEΔE 9.6Vantg Blue#5271FFΔE 11.82Savoy Blue#4B61D1ΔE 13.94

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

#5781FF Channel Values

How #5781FF 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 87 · G 129 · B 2558-bit channels as sent to the display
HSLH 225° · S 100% · L 67%Easiest model for building lighter and darker variants
HSVH 225° · S 66% · V 100%Matches the picker in most design tools
CMYKC 66% · M 49% · Y 0% · K 0%Approximate ink mix; confirm with an ICC profile before printing
Luminance3.51:1 vs white · 5.99:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #5781FF 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 text3.51:1AA normal AA large AAA normal
TextBlack text5.99:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #5781FF in the contrast checker.

Colors That Go With #5781FF

Pairings derived from color-wheel relationships. The complementary color sits opposite #5781FF; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#5781FF
Complementary
#FFD557
Analogous
#57D5FF
Analogous
#8157FF
Triadic
#FF5781
Triadic
#81FF57
Split comp.
#FF8157
Split comp.
#D5FF57

Tints & Shades of #5781FF

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

#6B90FF
#85A3FF
#99B3FF
#B3C6FF
#C7D5FF
#E0E8FF

Shades

#295EFF
#003EFA
#0033CC
#00289E
#001C70
#001142

Want a full 50-950 ramp with semantic roles? Generate design tokens from #5781FF.

How #5781FF 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#5781FF
Protanopia#7B7BFF
Protanomaly#6E7DFF
Deuteranopia#7575FF
Deuteranomaly#6A7AFF
Tritanopia#009999
Tritanomaly#3590CA
Achromatopsia#898989

Test a full palette in the color blindness simulator.

Using #5781FF in Code

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

CSS custom property--color-5781ff: #5781FF;
CSS backgroundbackground-color: #5781FF;
Tailwind configcolors: { 'color-5781ff': '#5781FF' }
SwiftUIColor(red: 0.341, green: 0.506, blue: 1.000)
Android XML<color name="color_5781ff">#5781FF</color>
SVG fillfill="#5781FF"

More Blue Colors

#5781FF sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#5781FF Frequently Asked Questions

What color is #5781FF?

#5781FF is a light blue — rgb(87, 129, 255) in RGB and hsl(225, 100%, 67%) in HSL. It carries no registered color name of its own; the closest named color is Blueberry (#4F86F7), which is clearly related but distinguishable side by side at a CIE76 distance of 8.4.

What is the RGB value of #5781FF?

#5781FF is rgb(87, 129, 255) — red 87, green 129, and blue 255 on the 0-255 scale.

What is the CMYK value of #5781FF?

#5781FF converts to approximately cmyk(66%, 49%, 0%, 0%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #5781FF be black or white?

Black text is the more readable choice. #5781FF scores 3.51:1 against white and 5.99:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #5781FF as a CSS color keyword?

No. #5781FF 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 royalblue (#4169E1) at a CIE76 distance of 9.48, which is clearly related but distinguishable side by side.

Open #5781FF 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.