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Recognised as Colour

#559CDC

  • #559CDC
  • Blue
  • Dark
  • Nearest: Steel blue

#559CDC is a blue with RGB values 85, 156, 220 and HSL 208°, 66%, 60%. It is a dark colour, so black text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#559CDC#559CDC
HEX#559CDC
RGBrgb(85, 156, 220)
RGB (0–1)0.3333, 0.6118, 0.8627
RGB percentages33.3%, 61.2%, 86.3%
HSLhsl(208.4, 65.9%, 59.8%)
HSV / HSBhsv(208.4, 61.4%, 86.3%)
CMYK61.4%, 29.1%, 0%, 13.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,610,716
CSS custom property--colour: #559CDC;

Brightness & contrast

Relative luminance0.30876WCAG 2.x, 0 is black and 1 is white
Perceived brightness148.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.18:1
Contrast with white2.93:1WCAG normal text: Fail
Contrast with black7.18:1WCAG normal text: AAA
Greyscale equivalent#929292
Inverted#AA6323

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#809EDFno red cones; affects about 1% of men; ΔE 10.2 from the original
Deuteranopia#6E91DBno green cones; the most common form, about 1% of men; ΔE 11.7 from the original
Tritanopia#00ABB2no blue cones; rare, and affects men and women equally; ΔE 39.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.93:1WCAG large text: Fail
Contrast with black, large text7.18:1WCAG large text: AAA

Named colours

Steel blue · ΔE 12.2Cornflower blue · ΔE 16Deep skyblue · ΔE 18.1Light skyblue · ΔE 21.8Sky blue · ΔE 27.2Dodgerblue · ΔE 27.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 12.19, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DC9555
Analogous#55DCD9, #5558DC
Triadic#DC559C, #9CDC55
Split complementary#DC5559, #DCD955
Tetradic#D955DC, #DC9555, #58DC55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FEFFFF
Lighter +30%#D4E6F6
Lighter +20%#AACDED
Lighter +10%#7FB5E5
Darker −10%#2B83D3
Darker −20%#2369A8
Darker −30%#1A4F7E
Darker −40%#113454
More saturated +25%#3B9DF6
Less saturated −25%#6F9BC2

Channel breakdown

R85
G156
B220
Red85 (33.3%)
Green156 (61.2%)
Blue220 (86.3%)
Hue208.44°
Saturation (HSL)65.85%
Lightness59.8%
Dominant channelBlue
Hex per channelR 55 · G 9C · B DC

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Every value on this page was computed from “559cdc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.