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Recognised as Colour

#5583D2

  • #5583D2
  • Blue
  • Dark
  • Nearest: Cornflower blue

#5583D2 is a blue with RGB values 85, 131, 210 and HSL 218°, 58%, 58%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#5583D2#5583D2
HEX#5583D2
RGBrgb(85, 131, 210)
RGB (0–1)0.3333, 0.5137, 0.8235
RGB percentages33.3%, 51.4%, 82.4%
HSLhsl(217.9, 58.1%, 57.8%)
HSV / HSBhsv(217.9, 59.5%, 82.4%)
CMYK59.5%, 37.6%, 0%, 17.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,604,306
CSS custom property--colour: #5583D2;

Brightness & contrast

Relative luminance0.22817WCAG 2.x, 0 is black and 1 is white
Perceived brightness131.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.56:1
Contrast with white3.77:1WCAG normal text: Fail
Contrast with black5.56:1WCAG normal text: AA
Greyscale equivalent#7F7F7F
Inverted#AA7C2D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#618AD5no red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#517ED0no green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#0095A0no blue cones; rare, and affects men and women equally; ΔE 47.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.77:1WCAG large text: AA
Contrast with black, large text5.56:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 8.1Steel blue · ΔE 18.3Dodgerblue · ΔE 18.6Royal blue · ΔE 27.7Medium purple · ΔE 28.9Dark slateblue · ΔE 30.1
Nearest named CSS colourCornflower blue (#6495ED)ΔE 8.11, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D2A455
Analogous#55C1D2, #6655D2
Triadic#D25583, #83D255
Split complementary#D26655, #C1D255
Tetradic#D255C1, #D2A455, #55D266

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F6F9FD
Lighter +30%#CEDBF2
Lighter +20%#A6BEE7
Lighter +10%#7DA0DD
Darker −10%#3367C1
Darker −20%#285299
Darker −30%#1E3C70
Darker −40%#132748
More saturated +25%#3A7CED
Less saturated −25%#708AB7

Channel breakdown

R85
G131
B210
Red85 (33.3%)
Green131 (51.4%)
Blue210 (82.4%)
Hue217.92°
Saturation (HSL)58.14%
Lightness57.84%
Dominant channelBlue
Hex per channelR 55 · G 83 · B D2

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Every value on this page was computed from “5583d2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.