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Recognised as Colour

#55B7D3

  • #55B7D3
  • Cyan
  • Dark
  • Nearest: Sky blue

#55B7D3 is a cyan with RGB values 85, 183, 211 and HSL 193°, 59%, 58%. It is a dark colour, so black text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#55B7D3#55B7D3
HEX#55B7D3
RGBrgb(85, 183, 211)
RGB (0–1)0.3333, 0.7176, 0.8275
RGB percentages33.3%, 71.8%, 82.7%
HSLhsl(193.3, 58.9%, 58%)
HSV / HSBhsv(193.3, 59.7%, 82.7%)
CMYK59.7%, 13.3%, 0%, 17.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,617,619
CSS custom property--colour: #55B7D3;

Brightness & contrast

Relative luminance0.40501WCAG 2.x, 0 is black and 1 is white
Perceived brightness164 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.1:1
Contrast with white2.31:1WCAG normal text: Fail
Contrast with black9.1:1WCAG normal text: AAA
Greyscale equivalent#A4A4A4
Inverted#AA482C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A6B2D5no red cones; affects about 1% of men; ΔE 24.3 from the original
Deuteranopia#93A5D3no green cones; the most common form, about 1% of men; ΔE 25.1 from the original
Tritanopia#00C0C0no blue cones; rare, and affects men and women equally; ΔE 21.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.31:1WCAG large text: Fail
Contrast with black, large text9.1:1WCAG large text: AAA

Named colours

Sky blue · ΔE 11.1Light skyblue · ΔE 15Cadetblue · ΔE 17.6Deep skyblue · ΔE 20.2Light blue · ΔE 20.4Dark turquoise · ΔE 22.3
Nearest named CSS colourSky blue (#87CEEB)ΔE 11.07, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D37155
Analogous#55D3B0, #5578D3
Triadic#D355B7, #B7D355
Split complementary#D35578, #D3B055
Tetradic#B055D3, #D37155, #78D355

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F7FCFD
Lighter +30%#CFEAF2
Lighter +20%#A6D9E8
Lighter +10%#7EC8DD
Darker −10%#32A3C3
Darker −20%#28819A
Darker −30%#1D5F72
Darker −40%#133D49
More saturated +25%#3AC6EE
Less saturated −25%#70A8B8

Channel breakdown

R85
G183
B211
Red85 (33.3%)
Green183 (71.8%)
Blue211 (82.7%)
Hue193.33°
Saturation (HSL)58.88%
Lightness58.04%
Dominant channelBlue
Hex per channelR 55 · G B7 · B D3

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Every value on this page was computed from “55b7d3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.