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Colour

#5588BB

  • #5588BB
  • Blue
  • Dark
  • Nearest: Steel blue

#5588BB is a blue with RGB values 85, 136, 187 and HSL 210°, 43%, 53%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#5588BB#5588BB
HEX#5588BB
HEX (short)#58B
RGBrgb(85, 136, 187)
RGB (0–1)0.3333, 0.5333, 0.7333
RGB percentages33.3%, 53.3%, 73.3%
HSLhsl(210, 42.9%, 53.3%)
HSV / HSBhsv(210, 54.5%, 73.3%)
CMYK54.5%, 27.3%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,605,563
CSS custom property--colour: #5588BB;

Brightness & contrast

Relative luminance0.23127WCAG 2.x, 0 is black and 1 is white
Perceived brightness130.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.63:1
Contrast with white3.73:1WCAG normal text: Fail
Contrast with black5.63:1WCAG normal text: AA
Greyscale equivalent#818181
Inverted#AA7744

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#738ABDno red cones; affects about 1% of men; ΔE 7.8 from the original
Deuteranopia#6680BAno green cones; the most common form, about 1% of men; ΔE 8.7 from the original
Tritanopia#13949Ano blue cones; rare, and affects men and women equally; ΔE 33.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.73:1WCAG large text: AA
Contrast with black, large text5.63:1WCAG large text: AAA

Named colours

Steel blue · ΔE 3.3Light slate grey · ΔE 20.8Slate grey · ΔE 21.4Cornflower blue · ΔE 21.9Deep skyblue · ΔE 25.6Light skyblue · ΔE 26.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 3.35, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB8855
Analogous#55BBBB, #5555BB
Triadic#BB5588, #88BB55
Split complementary#BB5555, #BBBB55
Tetradic#BB55BB, #BB8855, #55BB55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E7EEF5
Lighter +30%#C2D5E7
Lighter +20%#9EBBD8
Lighter +10%#79A2CA
Darker −10%#3F6F9E
Darker −20%#315579
Darker −30%#223C55
Darker −40%#132231
More saturated +25%#3788D9
Less saturated −25%#73889D

Channel breakdown

R85
G136
B187
Red85 (33.3%)
Green136 (53.3%)
Blue187 (73.3%)
Hue210°
Saturation (HSL)42.86%
Lightness53.33%
Dominant channelBlue
Hex per channelR 55 · G 88 · B BB

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Every value on this page was computed from “5588bb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.