Nerdulator> put something in

Recognised as Colour

#66ADFF

  • #66ADFF
  • Blue
  • Dark
  • Nearest: Cornflower blue

#66ADFF is a blue with RGB values 102, 173, 255 and HSL 212°, 100%, 70%. It is a dark colour, so black text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#66ADFF#66ADFF
HEX#66ADFF
RGBrgb(102, 173, 255)
RGB (0–1)0.4, 0.6784, 1
RGB percentages40%, 67.8%, 100%
HSLhsl(212.2, 100%, 70%)
HSV / HSBhsv(212.2, 60%, 100%)
CMYK60%, 32.2%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,729,215
CSS custom property--colour: #66ADFF;

Brightness & contrast

Relative luminance0.39932WCAG 2.x, 0 is black and 1 is white
Perceived brightness167.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.99:1
Contrast with white2.34:1WCAG normal text: Fail
Contrast with black8.99:1WCAG normal text: AAA
Greyscale equivalent#A4A4A4
Inverted#995200

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8AB2FFno red cones; affects about 1% of men; ΔE 7.6 from the original
Deuteranopia#76A3FDno green cones; the most common form, about 1% of men; ΔE 8.7 from the original
Tritanopia#00C0CAno blue cones; rare, and affects men and women equally; ΔE 48.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.34:1WCAG large text: Fail
Contrast with black, large text8.99:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.9Deep skyblue · ΔE 20.1Dodgerblue · ΔE 20.7Steel blue · ΔE 23.4Light skyblue · ΔE 24.8Sky blue · ΔE 32.3
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.91, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFB866
Analogous#66FAFF, #6B66FF
Triadic#FF66AD, #ADFF66
Split complementary#FF6B66, #FAFF66
Tetradic#FF66FA, #FFB866, #66FF6B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#CCE4FF
Lighter +10%#99C8FF
Darker −10%#3392FF
Darker −20%#0076FF
Darker −30%#005FCC
Darker −40%#004799
More saturated +25%#66ADFF
Less saturated −25%#79AEEC

Channel breakdown

R102
G173
B255
Red102 (40%)
Green173 (67.8%)
Blue255 (100%)
Hue212.16°
Saturation (HSL)100%
Lightness70%
Dominant channelBlue
Hex per channelR 66 · G AD · B FF

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “66adff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.