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Recognised as Colour

#668EFF

  • #668EFF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#668EFF is a blue with RGB values 102, 142, 255 and HSL 224°, 100%, 70%. It is a dark colour, so black text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#668EFF#668EFF
HEX#668EFF
RGBrgb(102, 142, 255)
RGB (0–1)0.4, 0.5569, 1
RGB percentages40%, 55.7%, 100%
HSLhsl(224.3, 100%, 70%)
HSV / HSBhsv(224.3, 60%, 100%)
CMYK60%, 44.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,721,279
CSS custom property--colour: #668EFF;

Brightness & contrast

Relative luminance0.29391WCAG 2.x, 0 is black and 1 is white
Perceived brightness149.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.88:1
Contrast with white3.05:1WCAG normal text: Fail
Contrast with black6.88:1WCAG normal text: AA
Greyscale equivalent#8E8E8E
Inverted#997100

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#599BFFno red cones; affects about 1% of men; ΔE 11.3 from the original
Deuteranopia#418DFDno green cones; the most common form, about 1% of men; ΔE 6.3 from the original
Tritanopia#00A7BAno blue cones; rare, and affects men and women equally; ΔE 63.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.05:1WCAG large text: AA
Contrast with black, large text6.88:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 10.3Cornflower blue · ΔE 15.3Royal blue · ΔE 15.6Medium purple · ΔE 20.9Slate blue · ΔE 22.9Medium slateblue · ΔE 23.7
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 10.31, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFD766
Analogous#66DBFF, #8A66FF
Triadic#FF668E, #8EFF66
Split complementary#FF8B66, #DAFF66
Tetradic#FF66DB, #FFD766, #66FF8B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#CCD9FF
Lighter +10%#99B4FF
Darker −10%#3368FF
Darker −20%#0043FF
Darker −30%#0035CC
Darker −40%#002899
More saturated +25%#668EFF
Less saturated −25%#7997EC

Channel breakdown

R102
G142
B255
Red102 (40%)
Green142 (55.7%)
Blue255 (100%)
Hue224.31°
Saturation (HSL)100%
Lightness70%
Dominant channelBlue
Hex per channelR 66 · G 8E · B FF

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Every value on this page was computed from “668eff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.