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#559DFC Color

#559DFC is rgb(85, 157, 252) in RGB, hsl(214, 97%, 66%) in HSL, and about cmyk(66%, 38%, 0%, 1%) in CMYK. It has no registered color name of its own — the closest is Cornflower Blue (#6495ED), clearly related but distinguishable side by side at ΔE 6.23. Black text is the more readable choice on this background.

#559DFC
HEX#559DFC
RGBrgb(85, 157, 252)
HSLhsl(214, 97%, 66%)
HSVhsv(214, 66%, 99%)
CMYKcmyk(66%, 38%, 0%, 1%)
OKLCHoklch(69.3% 0.158 256.1)
LABlab(63.42% -0.27 -54.99)
LCHlch(63.42% 54.99 269.72)

What #559DFC 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 #559DFC, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Cornflower Blue#6495EDΔE 6.23Bleu de France#318CE7ΔE 7.4United Nations Blue#5B92E5ΔE 7.68Dodger Blue#1E90FFΔE 11.08Microsoft Edge Blue#0078D7ΔE 14.67Blueberry#4F86F7ΔE 14.73

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

#559DFC Channel Values

How #559DFC 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 85 · G 157 · B 2528-bit channels as sent to the display
HSLH 214° · S 97% · L 66%Easiest model for building lighter and darker variants
HSVH 214° · S 66% · V 99%Matches the picker in most design tools
CMYKC 66% · M 38% · Y 0% · K 1%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.76:1 vs white · 7.61:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #559DFC 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 text2.76:1AA normal AA large AAA normal
TextBlack text7.61:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #559DFC in the contrast checker.

Colors That Go With #559DFC

Pairings derived from color-wheel relationships. The complementary color sits opposite #559DFC; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#559DFC
Complementary
#FCB454
Analogous
#54F1FC
Analogous
#5F54FC
Triadic
#FC549D
Triadic
#9DFC54
Split comp.
#FC5F54
Split comp.
#F1FC54

Tints & Shades of #559DFC

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

#6DABFD
#81B7FD
#9BC5FD
#AFD1FE
#C8DFFE
#DCEBFE

Shades

#2783FC
#046BF1
#0357C4
#02459C
#02316F
#011D41

Want a full 50-950 ramp with semantic roles? Generate design tokens from #559DFC.

How #559DFC 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#559DFC
Protanopia#9494FC
Protanomaly#7F98FC
Deuteranopia#8A8AFD
Deuteranomaly#7992FC
Tritanopia#19ADAD
Tritanomaly#3AA7D1
Achromatopsia#9C9C9C

Test a full palette in the color blindness simulator.

Using #559DFC in Code

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

CSS custom property--color-559dfc: #559DFC;
CSS backgroundbackground-color: #559DFC;
Tailwind configcolors: { 'color-559dfc': '#559DFC' }
SwiftUIColor(red: 0.333, green: 0.616, blue: 0.988)
Android XML<color name="color_559dfc">#559DFC</color>
SVG fillfill="#559DFC"

More Blue Colors

#559DFC sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#559DFC Frequently Asked Questions

What color is #559DFC?

#559DFC is a light blue — rgb(85, 157, 252) in RGB and hsl(214, 97%, 66%) in HSL. It carries no registered color name of its own; the closest named color is Cornflower Blue (#6495ED), which is clearly related but distinguishable side by side at a CIE76 distance of 6.23.

What is the RGB value of #559DFC?

#559DFC is rgb(85, 157, 252) — red 85, green 157, and blue 252 on the 0-255 scale.

What is the CMYK value of #559DFC?

#559DFC converts to approximately cmyk(66%, 38%, 0%, 1%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #559DFC be black or white?

Black text is the more readable choice. #559DFC scores 2.76:1 against white and 7.61:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #559DFC as a CSS color keyword?

No. #559DFC 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 cornflowerblue (#6495ED) at a CIE76 distance of 6.23, which is clearly related but distinguishable side by side.

Open #559DFC 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.