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Recognised as Colour

#668EDA

  • #668EDA
  • Blue
  • Dark
  • Nearest: Cornflower blue

#668EDA is a blue with RGB values 102, 142, 218 and HSL 219°, 61%, 63%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#668EDA#668EDA
HEX#668EDA
RGBrgb(102, 142, 218)
RGB (0–1)0.4, 0.5569, 0.8549
RGB percentages40%, 55.7%, 85.5%
HSLhsl(219.3, 61.1%, 62.7%)
HSV / HSBhsv(219.3, 53.2%, 85.5%)
CMYK53.2%, 34.9%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,721,242
CSS custom property--colour: #668EDA;

Brightness & contrast

Relative luminance0.27233WCAG 2.x, 0 is black and 1 is white
Perceived brightness142.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.45:1
Contrast with white3.26:1WCAG normal text: Fail
Contrast with black6.45:1WCAG normal text: AA
Greyscale equivalent#8B8B8B
Inverted#997125

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7094DDno red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#628AD8no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#279FAAno blue cones; rare, and affects men and women equally; ΔE 45.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.26:1WCAG large text: AA
Contrast with black, large text6.45:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 7Steel blue · ΔE 17.5Dodgerblue · ΔE 20.4Deep skyblue · ΔE 28.8Medium purple · ΔE 30.1Royal blue · ΔE 31
Nearest named CSS colourCornflower blue (#6495ED)ΔE 6.97, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DAB266
Analogous#66C8DA, #7866DA
Triadic#DA668E, #8EDA66
Split complementary#DA7866, #C8DA66
Tetradic#DA66C8, #DAB266, #66DA78

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E1E9F8
Lighter +20%#B8CBEE
Lighter +10%#8FACE4
Darker −10%#3D70D0
Darker −20%#2A58B0
Darker −30%#214486
Darker −40%#172F5D
More saturated +25%#4E87F2
Less saturated −25%#7E95C2

Channel breakdown

R102
G142
B218
Red102 (40%)
Green142 (55.7%)
Blue218 (85.5%)
Hue219.31°
Saturation (HSL)61.05%
Lightness62.75%
Dominant channelBlue
Hex per channelR 66 · G 8E · B DA

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