Colour

#005566

#005566
Cyan
Dark
Nearest: Dark slate grey

#005566 is a cyan with RGB values 0, 85, 102 and HSL 190°, 100%, 20%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#005566#005566

HEX#005566

HEX (short)#056

RGBrgb(0, 85, 102)

RGB (0–1)0, 0.3333, 0.4

RGB percentages0%, 33.3%, 40%

HSLhsl(190, 100%, 20%)

HSV / HSBhsv(190, 100%, 40%)

CMYK100%, 16.7%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer21,862

CSS custom property--colour: #005566;

Brightness & contrast

Relative luminance0.07456WCAG 2.x, 0 is black and 1 is white

Perceived brightness73.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.43:1

Contrast with white8.43:1WCAG normal text: AAA

Contrast with black2.49:1WCAG normal text: Fail

Greyscale equivalent#444444

Inverted#FFAA99

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4A5267no red cones; affects about 1% of men; ΔE 17.9 from the original

Deuteranopia#3E4966no green cones; the most common form, about 1% of men; ΔE 19.2 from the original

Tritanopia#005B5Ano blue cones; rare, and affects men and women equally; ΔE 12.7 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text8.43:1WCAG large text: AAA

Contrast with black, large text2.49:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 13 Teal · ΔE 21.9 Slate grey · ΔE 24.6 Dim grey · ΔE 25.1 Dark cyan · ΔE 25.7 Light slate grey · ΔE 27

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 12.96, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#661100

Analogous#006644, #002266

Triadic#660055, #556600

Split complementary#660022, #664400

Tetradic#440066, #661100, #226600

Tints, shades & saturation

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

Lighter +40%#33DDFF

Lighter +30%#00D5FF

Lighter +20%#00AACC

Lighter +10%#008099

Darker −10%#002B33

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#005566

Less saturated −25%#0D4D59

Channel breakdown

G85

B102

Red0 (0%)

Green85 (33.3%)

Blue102 (40%)

Hue190°

Saturation (HSL)100%

Lightness20%

Dominant channelBlue

Hex per channelR 00 · G 55 · B 66

Keep nerding

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#005566

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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