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Colour

#669CFF

  • #669CFF
  • Blue
  • Dark
  • Nearest: Cornflower blue

#669CFF is a blue with RGB values 102, 156, 255 and HSL 219°, 100%, 70%. It is a dark colour, so black text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#669CFF#669CFF
HEX#669CFF
RGBrgb(102, 156, 255)
RGB (0–1)0.4, 0.6118, 1
RGB percentages40%, 61.2%, 100%
HSLhsl(218.8, 100%, 70%)
HSV / HSBhsv(218.8, 60%, 100%)
CMYK60%, 38.8%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,724,863
CSS custom property--colour: #669CFF;

Brightness & contrast

Relative luminance0.33822WCAG 2.x, 0 is black and 1 is white
Perceived brightness157.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.76:1
Contrast with white2.7:1WCAG normal text: Fail
Contrast with black7.76:1WCAG normal text: AAA
Greyscale equivalent#989898
Inverted#996300

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#71A5FFno red cones; affects about 1% of men; ΔE 6.3 from the original
Deuteranopia#5C97FDno green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#00B2C1no blue cones; rare, and affects men and women equally; ΔE 56.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.7:1WCAG large text: Fail
Contrast with black, large text7.76:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 6.4Dodgerblue · ΔE 10.5Royal blue · ΔE 25Medium purple · ΔE 27.6Steel blue · ΔE 29.9Slate blue · ΔE 31.6
Nearest named CSS colourCornflower blue (#6495ED)ΔE 6.37, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFC966
Analogous#66E9FF, #7C66FF
Triadic#FF669C, #9CFF66
Split complementary#FF7C66, #E9FF66
Tetradic#FF66E9, #FFC966, #66FF7C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#CCDEFF
Lighter +10%#99BDFF
Darker −10%#337BFF
Darker −20%#005AFF
Darker −30%#0048CC
Darker −40%#003699
More saturated +25%#669CFF
Less saturated −25%#79A2EC

Channel breakdown

R102
G156
B255
Red102 (40%)
Green156 (61.2%)
Blue255 (100%)
Hue218.82°
Saturation (HSL)100%
Lightness70%
Dominant channelBlue
Hex per channelR 66 · G 9C · B FF

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Every value on this page was computed from “669cff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.