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Recognised as Colour

#55ADE2

  • #55ADE2
  • Blue
  • Dark
  • Nearest: Deep skyblue

#55ADE2 is a blue with RGB values 85, 173, 226 and HSL 203°, 71%, 61%. It is a dark colour, so black text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#55ADE2#55ADE2
HEX#55ADE2
RGBrgb(85, 173, 226)
RGB (0–1)0.3333, 0.6784, 0.8863
RGB percentages33.3%, 67.8%, 88.6%
HSLhsl(202.6, 70.9%, 61%)
HSV / HSBhsv(202.6, 62.4%, 88.6%)
CMYK62.4%, 23.5%, 0%, 11.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,615,074
CSS custom property--colour: #55ADE2;

Brightness & contrast

Relative luminance0.37309WCAG 2.x, 0 is black and 1 is white
Perceived brightness159.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.46:1
Contrast with white2.48:1WCAG normal text: Fail
Contrast with black8.46:1WCAG normal text: AAA
Greyscale equivalent#9E9E9E
Inverted#AA521D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#94ACE4no red cones; affects about 1% of men; ΔE 16.4 from the original
Deuteranopia#819EE1no green cones; the most common form, about 1% of men; ΔE 18 from the original
Tritanopia#00BBBFno blue cones; rare, and affects men and women equally; ΔE 33.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.48:1WCAG large text: Fail
Contrast with black, large text8.46:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 11.8Light skyblue · ΔE 13.6Steel blue · ΔE 16.6Sky blue · ΔE 18.2Light steelblue · ΔE 24.1Cornflower blue · ΔE 25.4
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 11.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E28A55
Analogous#55E2D0, #5567E2
Triadic#E255AD, #ADE255
Split complementary#E25567, #E2D055
Tetradic#D055E2, #E28A55, #67E255

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D8ECF8
Lighter +20%#ACD7F1
Lighter +10%#81C2E9
Darker −10%#2998DB
Darker −20%#1E7BB3
Darker −30%#175D87
Darker −40%#103F5B
More saturated +25%#3CB3FB
Less saturated −25%#6EA7C9

Channel breakdown

R85
G173
B226
Red85 (33.3%)
Green173 (67.8%)
Blue226 (88.6%)
Hue202.55°
Saturation (HSL)70.85%
Lightness60.98%
Dominant channelBlue
Hex per channelR 55 · G AD · B E2

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Every value on this page was computed from “55ade2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.