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Colour

#558CDF

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

#558CDF is a blue with RGB values 85, 140, 223 and HSL 216°, 68%, 60%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#558CDF#558CDF
HEX#558CDF
RGBrgb(85, 140, 223)
RGB (0–1)0.3333, 0.549, 0.8745
RGB percentages33.3%, 54.9%, 87.5%
HSLhsl(216.1, 68.3%, 60.4%)
HSV / HSBhsv(216.1, 61.9%, 87.5%)
CMYK61.9%, 37.2%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,606,623
CSS custom property--colour: #558CDF;

Brightness & contrast

Relative luminance0.26015WCAG 2.x, 0 is black and 1 is white
Perceived brightness139 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.2:1
Contrast with white3.39:1WCAG normal text: Fail
Contrast with black6.2:1WCAG normal text: AA
Greyscale equivalent#868686
Inverted#AA7320

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6893E2no red cones; affects about 1% of men; ΔE 4.4 from the original
Deuteranopia#5586DDno green cones; the most common form, about 1% of men; ΔE 3.8 from the original
Tritanopia#009FABno blue cones; rare, and affects men and women equally; ΔE 48.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.39:1WCAG large text: AA
Contrast with black, large text6.2:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 4.7Dodgerblue · ΔE 16Steel blue · ΔE 20Royal blue · ΔE 27.8Deep skyblue · ΔE 29.2Medium purple · ΔE 29.8
Nearest named CSS colourCornflower blue (#6495ED)ΔE 4.69, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DFA855
Analogous#55D1DF, #6355DF
Triadic#DF558C, #8CDF55
Split complementary#DF6355, #D1DF55
Tetradic#DF55D1, #DFA855, #55DF63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D6E3F7
Lighter +20%#ABC6EF
Lighter +10%#80A9E7
Darker −10%#2A6FD7
Darker −20%#2159AD
Darker −30%#194382
Darker −40%#102D58
More saturated +25%#3C87F8
Less saturated −25%#6E91C6

Channel breakdown

R85
G140
B223
Red85 (33.3%)
Green140 (54.9%)
Blue223 (87.5%)
Hue216.09°
Saturation (HSL)68.32%
Lightness60.39%
Dominant channelBlue
Hex per channelR 55 · G 8C · B DF

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