Colour

#558FAA

#558FAA
Cyan
Dark
Nearest: Light slate grey

#558FAA is a cyan with RGB values 85, 143, 170 and HSL 199°, 33%, 50%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Light slate grey.

Colour values

#558FAA#558FAA

HEX#558FAA

RGBrgb(85, 143, 170)

RGB (0–1)0.3333, 0.5608, 0.6667

RGB percentages33.3%, 56.1%, 66.7%

HSLhsl(199.1, 33.3%, 50%)

HSV / HSBhsv(199.1, 50%, 66.7%)

CMYK50%, 15.9%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,607,338

CSS custom property--colour: #558FAA;

Brightness & contrast

Relative luminance0.24478WCAG 2.x, 0 is black and 1 is white

Perceived brightness132.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.9:1

Contrast with white3.56:1WCAG normal text: Fail

Contrast with black5.9:1WCAG normal text: AA

Greyscale equivalent#858585

Inverted#AA7055

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#818DABno red cones; affects about 1% of men; ΔE 14.3 from the original

Deuteranopia#7584AAno green cones; the most common form, about 1% of men; ΔE 15.2 from the original

Tritanopia#289798no blue cones; rare, and affects men and women equally; ΔE 20.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.56:1WCAG large text: AA

Contrast with black, large text5.9:1WCAG large text: AAA

Named colours

Light slate grey · ΔE 12.8 Slate grey · ΔE 13.7 Steel blue · ΔE 14.7 Cadetblue · ΔE 15.8 Teal · ΔE 22.6 Dark cyan · ΔE 22.6

Nearest named CSS colourLight slate grey (#778899)ΔE 12.8, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#AA7055

Analogous#55AA9A, #5565AA

Triadic#AA558F, #8FAA55

Split complementary#AA5565, #AA9A55

Tetradic#9A55AA, #AA7055, #65AA55

Tints, shades & saturation

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

Lighter +40%#DDE9EE

Lighter +30%#BBD2DD

Lighter +20%#99BCCC

Lighter +10%#77A5BB

Darker −10%#447288

Darker −20%#335666

Darker −30%#223944

Darker −40%#111D22

More saturated +25%#359BCA

Less saturated −25%#75838A

Channel breakdown

R85

G143

B170

Red85 (33.3%)

Green143 (56.1%)

Blue170 (66.7%)

Hue199.06°

Saturation (HSL)33.33%

Lightness50%

Dominant channelBlue

Hex per channelR 55 · G 8F · B AA

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#558FAA

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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