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Colour

#558AF9

  • #558AF9
  • Blue
  • Dark
  • Nearest: Dodgerblue

#558AF9 is a blue with RGB values 85, 138, 249 and HSL 221°, 93%, 65%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#558AF9#558AF9
HEX#558AF9
RGBrgb(85, 138, 249)
RGB (0–1)0.3333, 0.5412, 0.9765
RGB percentages33.3%, 54.1%, 97.6%
HSLhsl(220.6, 93.2%, 65.5%)
HSV / HSBhsv(220.6, 65.9%, 97.6%)
CMYK65.9%, 44.6%, 0%, 2.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,606,137
CSS custom property--colour: #558AF9;

Brightness & contrast

Relative luminance0.26948WCAG 2.x, 0 is black and 1 is white
Perceived brightness142.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.39:1
Contrast with white3.29:1WCAG normal text: Fail
Contrast with black6.39:1WCAG normal text: AA
Greyscale equivalent#878787
Inverted#AA7506

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5396FDno red cones; affects about 1% of men; ΔE 7.7 from the original
Deuteranopia#3587F7no green cones; the most common form, about 1% of men; ΔE 4.3 from the original
Tritanopia#00A4B5no blue cones; rare, and affects men and women equally; ΔE 62.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.29:1WCAG large text: AA
Contrast with black, large text6.39:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 7.7Cornflower blue · ΔE 14.2Royal blue · ΔE 15Medium purple · ΔE 22.6Slate blue · ΔE 23.4Medium slateblue · ΔE 25.2
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 7.74, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F9C455
Analogous#55DCF9, #7255F9
Triadic#F9558A, #8AF955
Split complementary#F97255, #DCF955
Tetradic#F955DC, #F9C455, #55F972

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E9F0FE
Lighter +20%#B8CEFC
Lighter +10%#86ACFB
Darker −10%#2468F7
Darker −20%#084EE0
Darker −30%#063DAF
Darker −40%#042C7E
More saturated +25%#4F88FF
Less saturated −25%#6B92E3

Channel breakdown

R85
G138
B249
Red85 (33.3%)
Green138 (54.1%)
Blue249 (97.6%)
Hue220.61°
Saturation (HSL)93.18%
Lightness65.49%
Dominant channelBlue
Hex per channelR 55 · G 8A · B F9

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Every value on this page was computed from “558af9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.