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Recognised as Colour

#42A7DC

  • #42A7DC
  • Blue
  • Dark
  • Nearest: Deep skyblue

#42A7DC is a blue with RGB values 66, 167, 220 and HSL 201°, 69%, 56%. It is a dark colour, so black text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#42A7DC#42A7DC
HEX#42A7DC
RGBrgb(66, 167, 220)
RGB (0–1)0.2588, 0.6549, 0.8627
RGB percentages25.9%, 65.5%, 86.3%
HSLhsl(200.6, 68.8%, 56.1%)
HSV / HSBhsv(200.6, 70%, 86.3%)
CMYK70%, 24.1%, 0%, 13.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,368,348
CSS custom property--colour: #42A7DC;

Brightness & contrast

Relative luminance0.33963WCAG 2.x, 0 is black and 1 is white
Perceived brightness152.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.79:1
Contrast with white2.69:1WCAG normal text: Fail
Contrast with black7.79:1WCAG normal text: AAA
Greyscale equivalent#959595
Inverted#BD5823

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8EA6DEno red cones; affects about 1% of men; ΔE 18.3 from the original
Deuteranopia#7897DBno green cones; the most common form, about 1% of men; ΔE 19.7 from the original
Tritanopia#00B5B9no blue cones; rare, and affects men and women equally; ΔE 32.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.69:1WCAG large text: Fail
Contrast with black, large text7.79:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 11.8Steel blue · ΔE 15.3Light skyblue · ΔE 16.3Sky blue · ΔE 20.2Cornflower blue · ΔE 26Light steelblue · ΔE 26.6
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 11.8, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DC7742
Analogous#42DCC4, #425ADC
Triadic#DC42A7, #A7DC42
Split complementary#DC425A, #DCC442
Tetradic#C442DC, #DC7742, #5ADC42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EEF7FC
Lighter +30%#C3E3F4
Lighter +20%#98CFEC
Lighter +10%#6DBBE4
Darker −10%#258FC6
Darker −20%#1D709B
Darker −30%#155170
Darker −40%#0D3245
More saturated +25%#26B0F8
Less saturated −25%#5E9EC0

Channel breakdown

R66
G167
B220
Red66 (25.9%)
Green167 (65.5%)
Blue220 (86.3%)
Hue200.65°
Saturation (HSL)68.75%
Lightness56.08%
Dominant channelBlue
Hex per channelR 42 · G A7 · B DC

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Every value on this page was computed from “42a7dc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.