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Recognised as Colour

#55B6DD

  • #55B6DD
  • Cyan
  • Dark
  • Nearest: Light skyblue

#55B6DD is a cyan with RGB values 85, 182, 221 and HSL 197°, 67%, 60%. It is a dark colour, so black text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#55B6DD#55B6DD
HEX#55B6DD
RGBrgb(85, 182, 221)
RGB (0–1)0.3333, 0.7137, 0.8667
RGB percentages33.3%, 71.4%, 86.7%
HSLhsl(197.2, 66.7%, 60%)
HSV / HSBhsv(197.2, 61.5%, 86.7%)
CMYK61.5%, 17.6%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,617,373
CSS custom property--colour: #55B6DD;

Brightness & contrast

Relative luminance0.40608WCAG 2.x, 0 is black and 1 is white
Perceived brightness164.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.12:1
Contrast with white2.3:1WCAG normal text: Fail
Contrast with black9.12:1WCAG normal text: AAA
Greyscale equivalent#A4A4A4
Inverted#AA4922

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A1B3DFno red cones; affects about 1% of men; ΔE 21.2 from the original
Deuteranopia#8EA5DDno green cones; the most common form, about 1% of men; ΔE 22.7 from the original
Tritanopia#00C1C3no blue cones; rare, and affects men and women equally; ΔE 26.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.3:1WCAG large text: Fail
Contrast with black, large text9.12:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 11.6Sky blue · ΔE 11.7Deep skyblue · ΔE 14.7Light steelblue · ΔE 22.1Steel blue · ΔE 22.1Light blue · ΔE 22.5
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 11.6, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DD7C55
Analogous#55DDC0, #5572DD
Triadic#DD55B6, #B6DD55
Split complementary#DD5572, #DDC055
Tetradic#C055DD, #DD7C55, #72DD55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D5EDF7
Lighter +20%#AADAEE
Lighter +10%#7FC8E5
Darker −10%#2AA4D5
Darker −20%#2283AA
Darker −30%#196280
Darker −40%#114155
More saturated +25%#3BC1F7
Less saturated −25%#6EABC3

Channel breakdown

R85
G182
B221
Red85 (33.3%)
Green182 (71.4%)
Blue221 (86.7%)
Hue197.21°
Saturation (HSL)66.67%
Lightness60%
Dominant channelBlue
Hex per channelR 55 · G B6 · B DD

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Every value on this page was computed from “55b6dd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.