Colour

#5599BB

#5599BB
Blue
Dark
Nearest: Steel blue

#5599BB is a blue with RGB values 85, 153, 187 and HSL 200°, 43%, 53%. It is a dark colour, so black text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#5599BB#5599BB

HEX#5599BB

HEX (short)#59B

RGBrgb(85, 153, 187)

RGB (0–1)0.3333, 0.6, 0.7333

RGB percentages33.3%, 60%, 73.3%

HSLhsl(200, 42.9%, 53.3%)

HSV / HSBhsv(200, 54.5%, 73.3%)

CMYK54.5%, 18.2%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,609,915

CSS custom property--colour: #5599BB;

Brightness & contrast

Relative luminance0.28302WCAG 2.x, 0 is black and 1 is white

Perceived brightness141 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.66:1

Contrast with white3.15:1WCAG normal text: Fail

Contrast with black6.66:1WCAG normal text: AA

Greyscale equivalent#8D8D8D

Inverted#AA6644

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#8897BDno red cones; affects about 1% of men; ΔE 15.6 from the original

Deuteranopia#7A8CBBno green cones; the most common form, about 1% of men; ΔE 17.1 from the original

Tritanopia#03A2A4no blue cones; rare, and affects men and women equally; ΔE 25.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.15:1WCAG large text: AA

Contrast with black, large text6.66:1WCAG large text: AAA

Named colours

Steel blue · ΔE 13.5 Light slate grey · ΔE 16.8 Slate grey · ΔE 18.2 Cadetblue · ΔE 18.6 Sky blue · ΔE 19.5 Light skyblue · ΔE 20.1

Nearest named CSS colourSteel blue (#4682B4)ΔE 13.5, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#BB7755

Analogous#55BBAA, #5566BB

Triadic#BB5599, #99BB55

Split complementary#BB5566, #BBAA55

Tetradic#AA55BB, #BB7755, #66BB55

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#E7F0F5

Lighter +30%#C2DBE7

Lighter +20%#9EC5D8

Lighter +10%#79AFCA

Darker −10%#3F7E9E

Darker −20%#316179

Darker −30%#224455

Darker −40%#132731

More saturated +25%#37A3D9

Less saturated −25%#738F9D

Channel breakdown

R85

G153

B187

Red85 (33.3%)

Green153 (60%)

Blue187 (73.3%)

Hue200°

Saturation (HSL)42.86%

Lightness53.33%

Dominant channelBlue

Hex per channelR 55 · G 99 · B BB

Keep nerding

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#5599BB

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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