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Recognised as Colour

#558EEE

  • #558EEE
  • Blue
  • Dark
  • Nearest: Cornflower blue

#558EEE is a blue with RGB values 85, 142, 238 and HSL 218°, 82%, 63%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#558EEE#558EEE
HEX#558EEE
RGBrgb(85, 142, 238)
RGB (0–1)0.3333, 0.5569, 0.9333
RGB percentages33.3%, 55.7%, 93.3%
HSLhsl(217.6, 81.8%, 63.3%)
HSV / HSBhsv(217.6, 64.3%, 93.3%)
CMYK64.3%, 40.3%, 0%, 6.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,607,150
CSS custom property--colour: #558EEE;

Brightness & contrast

Relative luminance0.2745WCAG 2.x, 0 is black and 1 is white
Perceived brightness143 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.49:1
Contrast with white3.24:1WCAG normal text: Fail
Contrast with black6.49:1WCAG normal text: AA
Greyscale equivalent#898989
Inverted#AA7111

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6297F2no red cones; affects about 1% of men; ΔE 4.7 from the original
Deuteranopia#4B88ECno green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#00A4B2no blue cones; rare, and affects men and women equally; ΔE 55.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.24:1WCAG large text: AA
Contrast with black, large text6.49:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 5.6Dodgerblue · ΔE 9.5Royal blue · ΔE 22.2Medium purple · ΔE 26.4Steel blue · ΔE 27.4Slate blue · ΔE 28.9
Nearest named CSS colourCornflower blue (#6495ED)ΔE 5.56, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EEB555
Analogous#55DBEE, #6855EE
Triadic#EE558E, #8EEE55
Split complementary#EE6855, #DBEE55
Tetradic#EE55DB, #EEB555, #55EE68

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E0EAFC
Lighter +20%#B2CCF7
Lighter +10%#83ADF3
Darker −10%#276FE9
Darker −20%#1457C9
Darker −30%#0F439B
Darker −40%#0B2F6C
More saturated +25%#448AFF
Less saturated −25%#6C94D7

Channel breakdown

R85
G142
B238
Red85 (33.3%)
Green142 (55.7%)
Blue238 (93.3%)
Hue217.65°
Saturation (HSL)81.82%
Lightness63.33%
Dominant channelBlue
Hex per channelR 55 · G 8E · B EE

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Every value on this page was computed from “558eee” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.