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Colour

#66C7FC

  • #66C7FC
  • Blue
  • Light
  • Nearest: Light skyblue

#66C7FC is a blue with RGB values 102, 199, 252 and HSL 201°, 96%, 69%. It is a light colour, so black text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#66C7FC#66C7FC
HEX#66C7FC
RGBrgb(102, 199, 252)
RGB (0–1)0.4, 0.7804, 0.9882
RGB percentages40%, 78%, 98.8%
HSLhsl(201.2, 96.2%, 69.4%)
HSV / HSBhsv(201.2, 59.5%, 98.8%)
CMYK59.5%, 21%, 0%, 1.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,735,868
CSS custom property--colour: #66C7FC;

Brightness & contrast

Relative luminance0.507WCAG 2.x, 0 is black and 1 is white
Perceived brightness183.3 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.14:1
Contrast with white1.89:1WCAG normal text: Fail
Contrast with black11.14:1WCAG normal text: AAA
Greyscale equivalent#B6B6B6
Inverted#993803

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AEC5FFno red cones; affects about 1% of men; ΔE 19.4 from the original
Deuteranopia#99B6FBno green cones; the most common form, about 1% of men; ΔE 20.6 from the original
Tritanopia#00D5D9no blue cones; rare, and affects men and women equally; ΔE 34.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.89:1WCAG large text: Fail
Contrast with black, large text11.14:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 7.4Deep skyblue · ΔE 9.8Sky blue · ΔE 13.7Light steelblue · ΔE 23Light blue · ΔE 24.4Steel blue · ΔE 25.9
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 7.43, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FC9B66
Analogous#66FCE6, #667CFC
Triadic#FC66C7, #C7FC66
Split complementary#FC667C, #FCE666
Tetradic#E666FC, #FC9B66, #7CFC66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FCFEFF
Lighter +20%#CAECFE
Lighter +10%#98D9FD
Darker −10%#34B5FB
Darker −20%#05A2F7
Darker −30%#0481C5
Darker −40%#036093
More saturated +25%#63C8FF
Less saturated −25%#7AC1E9

Channel breakdown

R102
G199
B252
Red102 (40%)
Green199 (78%)
Blue252 (98.8%)
Hue201.2°
Saturation (HSL)96.15%
Lightness69.41%
Dominant channelBlue
Hex per channelR 66 · G C7 · B FC

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Every value on this page was computed from “66c7fc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.