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Recognised as Colour

#42DCF9

  • #42DCF9
  • Cyan
  • Light
  • Nearest: Sky blue

#42DCF9 is a cyan with RGB values 66, 220, 249 and HSL 190°, 94%, 62%. It is a light colour, so black text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#42DCF9#42DCF9
HEX#42DCF9
RGBrgb(66, 220, 249)
RGB (0–1)0.2588, 0.8627, 0.9765
RGB percentages25.9%, 86.3%, 97.6%
HSLhsl(189.5, 93.8%, 61.8%)
HSV / HSBhsv(189.5, 73.5%, 97.6%)
CMYK73.5%, 11.6%, 0%, 2.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,381,945
CSS custom property--colour: #42DCF9;

Brightness & contrast

Relative luminance0.59184WCAG 2.x, 0 is black and 1 is white
Perceived brightness191.8 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.84:1
Contrast with white1.64:1WCAG normal text: Fail
Contrast with black12.84:1WCAG normal text: AAA
Greyscale equivalent#BDBDBD
Inverted#BD2306

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C6D5FBno red cones; affects about 1% of men; ΔE 33.8 from the original
Deuteranopia#ADC2F9no green cones; the most common form, about 1% of men; ΔE 35.8 from the original
Tritanopia#00E7E5no blue cones; rare, and affects men and women equally; ΔE 20.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.64:1WCAG large text: Fail
Contrast with black, large text12.84:1WCAG large text: AAA

Named colours

Sky blue · ΔE 16.2Dark turquoise · ΔE 16.7Medium turquoise · ΔE 19.2Light skyblue · ΔE 19.7Deep skyblue · ΔE 22.9Aqua · ΔE 23.3
Nearest named CSS colourSky blue (#87CEEB)ΔE 16.19, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F95F42
Analogous#42F9BA, #4281F9
Triadic#F942DC, #DCF942
Split complementary#F94281, #F9BA42
Tetradic#BA42F9, #F95F42, #81F942

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D6F7FE
Lighter +20%#A5EEFC
Lighter +10%#73E5FB
Darker −10%#11D3F7
Darker −20%#07AFCE
Darker −30%#05859D
Darker −40%#035B6C
More saturated +25%#3CE0FF
Less saturated −25%#5ACBE1

Channel breakdown

R66
G220
B249
Red66 (25.9%)
Green220 (86.3%)
Blue249 (97.6%)
Hue189.51°
Saturation (HSL)93.85%
Lightness61.76%
Dominant channelBlue
Hex per channelR 42 · G DC · B F9

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Every value on this page was computed from “42dcf9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.