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Colour

#6684CD

  • #6684CD
  • Blue
  • Dark
  • Nearest: Cornflower blue

#6684CD is a blue with RGB values 102, 132, 205 and HSL 223°, 51%, 60%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#6684CD#6684CD
HEX#6684CD
RGBrgb(102, 132, 205)
RGB (0–1)0.4, 0.5176, 0.8039
RGB percentages40%, 51.8%, 80.4%
HSLhsl(222.5, 50.7%, 60.2%)
HSV / HSBhsv(222.5, 50.2%, 80.4%)
CMYK50.2%, 35.6%, 0%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,718,669
CSS custom property--colour: #6684CD;

Brightness & contrast

Relative luminance0.23735WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.75:1
Contrast with white3.65:1WCAG normal text: Fail
Contrast with black5.75:1WCAG normal text: AA
Greyscale equivalent#838383
Inverted#997B32

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#688BD0no red cones; affects about 1% of men; ΔE 3.9 from the original
Deuteranopia#5C81CBno green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#38949Fno blue cones; rare, and affects men and women equally; ΔE 42.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.65:1WCAG large text: AA
Contrast with black, large text5.75:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.3Steel blue · ΔE 16.7Dodgerblue · ΔE 22.6Medium purple · ΔE 28.6Dark slateblue · ΔE 29.9Royal blue · ΔE 30.4
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.25, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CDAF66
Analogous#66B7CD, #7C66CD
Triadic#CD6684, #84CD66
Split complementary#CD7C66, #B7CD66
Tetradic#CD66B7, #CDAF66, #66CD7C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9E1F3
Lighter +20%#B3C2E6
Lighter +10%#8CA3DA
Darker −10%#4065C0
Darker −20%#32519B
Darker −30%#263D74
Darker −40%#19294E
More saturated +25%#4D79E6
Less saturated −25%#7F8FB4

Channel breakdown

R102
G132
B205
Red102 (40%)
Green132 (51.8%)
Blue205 (80.4%)
Hue222.52°
Saturation (HSL)50.74%
Lightness60.2%
Dominant channelBlue
Hex per channelR 66 · G 84 · B CD

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Every value on this page was computed from “6684cd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.