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Recognised as Colour

#647EE6

  • #647EE6
  • Blue
  • Dark
  • Nearest: Royal blue

#647EE6 is a blue with RGB values 100, 126, 230 and HSL 228°, 72%, 65%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#647EE6#647EE6
HEX#647EE6
RGBrgb(100, 126, 230)
RGB (0–1)0.3922, 0.4941, 0.902
RGB percentages39.2%, 49.4%, 90.2%
HSLhsl(228, 72.2%, 64.7%)
HSV / HSBhsv(228, 56.5%, 90.2%)
CMYK56.5%, 45.2%, 0%, 9.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,586,086
CSS custom property--colour: #647EE6;

Brightness & contrast

Relative luminance0.23344WCAG 2.x, 0 is black and 1 is white
Perceived brightness135.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.67:1
Contrast with white3.7:1WCAG normal text: Fail
Contrast with black5.67:1WCAG normal text: AA
Greyscale equivalent#808080
Inverted#9B8119

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4E8BEAno red cones; affects about 1% of men; ΔE 10.9 from the original
Deuteranopia#3D7FE4no green cones; the most common form, about 1% of men; ΔE 8 from the original
Tritanopia#0895A7no blue cones; rare, and affects men and women equally; ΔE 59.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.7:1WCAG large text: AA
Contrast with black, large text5.67:1WCAG large text: AAA

Named colours

Royal blue · ΔE 13.3Dodgerblue · ΔE 13.8Cornflower blue · ΔE 14.7Medium purple · ΔE 17Slate blue · ΔE 18.4Medium slateblue · ΔE 22.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 13.33, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E6CC64
Analogous#64BFE6, #8B64E6
Triadic#E6647E, #7EE664
Split complementary#E68B64, #BFE664
Tetradic#E664BF, #E6CC64, #64E68B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E8ECFB
Lighter +20%#BCC7F4
Lighter +10%#90A3ED
Darker −10%#3859DF
Darker −20%#2041C4
Darker −30%#193298
Darker −40%#12246C
More saturated +25%#4D71FD
Less saturated −25%#7A8BD0

Channel breakdown

R100
G126
B230
Red100 (39.2%)
Green126 (49.4%)
Blue230 (90.2%)
Hue228°
Saturation (HSL)72.22%
Lightness64.71%
Dominant channelBlue
Hex per channelR 64 · G 7E · B E6

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Every value on this page was computed from “647ee6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.