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#6668EB Color

#6668EB is rgb(102, 104, 235) in RGB, hsl(239, 77%, 66%) in HSL, and about cmyk(57%, 56%, 0%, 8%) in CMYK. It has no registered color name of its own — the closest is Medium Slate Blue (#7B68EE), clearly related but distinguishable side by side at ΔE 6.07. Black text is the more readable choice on this background.

#6668EB
HEX#6668EB
RGBrgb(102, 104, 235)
HSLhsl(239, 77%, 66%)
HSVhsv(239, 57%, 92%)
CMYKcmyk(57%, 56%, 0%, 8%)
OKLCHoklch(58.7% 0.193 278)
LABlab(49.39% 28.26 -67.95)
LCHlch(49.39% 73.59 292.58)

What #6668EB 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 #6668EB, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Slate Blue#7B68EEΔE 6.07Vantg Blue#5271FFΔE 8.71Ultramarine Blue#4166F5ΔE 9.75Bluetiful#3C69E7ΔE 9.91Iris#5A4FCFΔE 9.94Slate Blue#6A5ACDΔE 10.51

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

#6668EB Channel Values

How #6668EB 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 102 · G 104 · B 2358-bit channels as sent to the display
HSLH 239° · S 77% · L 66%Easiest model for building lighter and darker variants
HSVH 239° · S 57% · V 92%Matches the picker in most design tools
CMYKC 57% · M 56% · Y 0% · K 8%Approximate ink mix; confirm with an ICC profile before printing
Luminance4.43:1 vs white · 4.74:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #6668EB 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 text4.43:1AA normal AA large AAA normal
TextBlack text4.74:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #6668EB in the contrast checker.

Colors That Go With #6668EB

Pairings derived from color-wheel relationships. The complementary color sits opposite #6668EB; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#6668EB
Complementary
#EBE966
Analogous
#66ABEB
Analogous
#A666EB
Triadic
#EB6668
Triadic
#68EB66
Split comp.
#EBA666
Split comp.
#ABEB66

Tints & Shades of #6668EB

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

#7C7EEE
#8E90F0
#A5A6F3
#B7B8F6
#CDCEF9
#DFE0FB

Shades

#3D40E6
#1C1FD9
#1719B0
#12148C
#0D0E63
#08083B

Want a full 50-950 ramp with semantic roles? Generate design tokens from #6668EB.

How #6668EB 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#6668EB
Protanopia#6868EB
Protanomaly#6768EB
Deuteranopia#6767EB
Deuteranomaly#6768EB
Tritanopia#3C8383
Tritanomaly#5079B6
Achromatopsia#787878

Test a full palette in the color blindness simulator.

Using #6668EB in Code

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

CSS custom property--color-6668eb: #6668EB;
CSS backgroundbackground-color: #6668EB;
Tailwind configcolors: { 'color-6668eb': '#6668EB' }
SwiftUIColor(red: 0.400, green: 0.408, blue: 0.922)
Android XML<color name="color_6668eb">#6668EB</color>
SVG fillfill="#6668EB"

More Blue Colors

#6668EB sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#6668EB Frequently Asked Questions

What color is #6668EB?

#6668EB is a light blue — rgb(102, 104, 235) in RGB and hsl(239, 77%, 66%) in HSL. It carries no registered color name of its own; the closest named color is Medium Slate Blue (#7B68EE), which is clearly related but distinguishable side by side at a CIE76 distance of 6.07.

What is the RGB value of #6668EB?

#6668EB is rgb(102, 104, 235) — red 102, green 104, and blue 235 on the 0-255 scale.

What is the CMYK value of #6668EB?

#6668EB converts to approximately cmyk(57%, 56%, 0%, 8%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #6668EB be black or white?

Black text is the more readable choice. #6668EB scores 4.43:1 against white and 4.74:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #6668EB as a CSS color keyword?

No. #6668EB 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 mediumslateblue (#7B68EE) at a CIE76 distance of 6.07, which is clearly related but distinguishable side by side.

Open #6668EB 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.