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Recognised as Colour

#42BDFD

  • #42BDFD
  • Blue
  • Dark
  • Nearest: Deep skyblue

#42BDFD is a blue with RGB values 66, 189, 253 and HSL 201°, 98%, 63%. It is a dark colour, so black text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#42BDFD#42BDFD
HEX#42BDFD
RGBrgb(66, 189, 253)
RGB (0–1)0.2588, 0.7412, 0.9922
RGB percentages25.9%, 74.1%, 99.2%
HSLhsl(200.5, 97.9%, 62.5%)
HSV / HSBhsv(200.5, 73.9%, 99.2%)
CMYK73.9%, 25.3%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,374,013
CSS custom property--colour: #42BDFD;

Brightness & contrast

Relative luminance0.44645WCAG 2.x, 0 is black and 1 is white
Perceived brightness172 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.93:1
Contrast with white2.12:1WCAG normal text: Fail
Contrast with black9.93:1WCAG normal text: AAA
Greyscale equivalent#A7A7A7
Inverted#BD4202

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#9EBCFFno red cones; affects about 1% of men; ΔE 20.2 from the original
Deuteranopia#85AAFCno green cones; the most common form, about 1% of men; ΔE 22.6 from the original
Tritanopia#00CED3no blue cones; rare, and affects men and women equally; ΔE 37.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.12:1WCAG large text: Fail
Contrast with black, large text9.93:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 4.6Light skyblue · ΔE 14.8Sky blue · ΔE 21.1Steel blue · ΔE 23.9Cornflower blue · ΔE 26.3Light steelblue · ΔE 29.2
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 4.6, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FD8242
Analogous#42FDDF, #4260FD
Triadic#FD42BD, #BDFD42
Split complementary#FD4260, #FDDF42
Tetradic#DF42FD, #FD8242, #60FD42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9F2FF
Lighter +20%#A7E0FE
Lighter +10%#74CFFE
Darker −10%#10ABFC
Darker −20%#028ED7
Darker −30%#026DA4
Darker −40%#014B72
More saturated +25%#40BEFF
Less saturated −25%#5AB5E5

Channel breakdown

R66
G189
B253
Red66 (25.9%)
Green189 (74.1%)
Blue253 (99.2%)
Hue200.53°
Saturation (HSL)97.91%
Lightness62.55%
Dominant channelBlue
Hex per channelR 42 · G BD · B FD

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Every value on this page was computed from “42bdfd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.