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Recognised as Colour

#66BEFB

  • #66BEFB
  • Blue
  • Dark
  • Nearest: Deep skyblue

#66BEFB is a blue with RGB values 102, 190, 251 and HSL 205°, 95%, 69%. It is a dark colour, so black text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#66BEFB#66BEFB
HEX#66BEFB
RGBrgb(102, 190, 251)
RGB (0–1)0.4, 0.7451, 0.9843
RGB percentages40%, 74.5%, 98.4%
HSLhsl(204.6, 94.9%, 69.2%)
HSV / HSBhsv(204.6, 59.4%, 98.4%)
CMYK59.4%, 24.3%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,733,563
CSS custom property--colour: #66BEFB;

Brightness & contrast

Relative luminance0.46617WCAG 2.x, 0 is black and 1 is white
Perceived brightness177.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.32:1
Contrast with white2.03:1WCAG normal text: Fail
Contrast with black10.32:1WCAG normal text: AAA
Greyscale equivalent#B0B0B0
Inverted#994104

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A3BEFEno red cones; affects about 1% of men; ΔE 15.6 from the original
Deuteranopia#8EAFFAno green cones; the most common form, about 1% of men; ΔE 17 from the original
Tritanopia#00CDD3no blue cones; rare, and affects men and women equally; ΔE 37.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.03:1WCAG large text: Fail
Contrast with black, large text10.32:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 9.9Light skyblue · ΔE 11.3Sky blue · ΔE 18.6Steel blue · ΔE 22.8Light steelblue · ΔE 24.5Cornflower blue · ΔE 24.6
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 9.87, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FBA366
Analogous#66FBED, #6674FB
Triadic#FB66BE, #BEFB66
Split complementary#FB6674, #FBEE66
Tetradic#ED66FB, #FBA366, #73FB66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FBFDFF
Lighter +20%#C9E8FE
Lighter +10%#98D3FC
Darker −10%#34A9FA
Darker −20%#0693F5
Darker −30%#0575C3
Darker −40%#045791
More saturated +25%#62BFFF
Less saturated −25%#7ABAE7

Channel breakdown

R102
G190
B251
Red102 (40%)
Green190 (74.5%)
Blue251 (98.4%)
Hue204.56°
Saturation (HSL)94.9%
Lightness69.22%
Dominant channelBlue
Hex per channelR 66 · G BE · B FB

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