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Colour

#669CCE

  • #669CCE
  • Blue
  • Dark
  • Nearest: Steel blue

#669CCE is a blue with RGB values 102, 156, 206 and HSL 209°, 51%, 60%. It is a dark colour, so black text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#669CCE#669CCE
HEX#669CCE
RGBrgb(102, 156, 206)
RGB (0–1)0.4, 0.6118, 0.8078
RGB percentages40%, 61.2%, 80.8%
HSLhsl(208.8, 51.5%, 60.4%)
HSV / HSBhsv(208.8, 50.5%, 80.8%)
CMYK50.5%, 24.3%, 0%, 19.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,724,814
CSS custom property--colour: #669CCE;

Brightness & contrast

Relative luminance0.31058WCAG 2.x, 0 is black and 1 is white
Perceived brightness149.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.21:1
Contrast with white2.91:1WCAG normal text: Fail
Contrast with black7.21:1WCAG normal text: AAA
Greyscale equivalent#949494
Inverted#996331

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#879DD0no red cones; affects about 1% of men; ΔE 9.2 from the original
Deuteranopia#7A93CDno green cones; the most common form, about 1% of men; ΔE 10.1 from the original
Tritanopia#31A8ADno blue cones; rare, and affects men and women equally; ΔE 32.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.91:1WCAG large text: Fail
Contrast with black, large text7.21:1WCAG large text: AAA

Named colours

Steel blue · ΔE 10.1Light skyblue · ΔE 18.7Deep skyblue · ΔE 20.5Light slate grey · ΔE 21.1Sky blue · ΔE 22.2Cornflower blue · ΔE 22.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 10.15, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CE9866
Analogous#66CECC, #6668CE
Triadic#CE669C, #9CCE66
Split complementary#CE6668, #CECC66
Tetradic#CC66CE, #CE9866, #68CE66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DAE7F3
Lighter +20%#B3CEE7
Lighter +10%#8DB5DA
Darker −10%#3F83C2
Darker −20%#32699C
Darker −30%#264F75
Darker −40%#19354F
More saturated +25%#4D9DE7
Less saturated −25%#7F9BB5

Channel breakdown

R102
G156
B206
Red102 (40%)
Green156 (61.2%)
Blue206 (80.8%)
Hue208.85°
Saturation (HSL)51.49%
Lightness60.39%
Dominant channelBlue
Hex per channelR 66 · G 9C · B CE

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