Recognised as Colour

#556D87

#556D87
Blue
Dark
Nearest: Slate grey

#556D87 is a blue with RGB values 85, 109, 135 and HSL 211°, 23%, 43%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#556D87#556D87

HEX#556D87

RGBrgb(85, 109, 135)

RGB (0–1)0.3333, 0.4275, 0.5294

RGB percentages33.3%, 42.7%, 52.9%

HSLhsl(211.2, 22.7%, 43.1%)

HSV / HSBhsv(211.2, 37%, 52.9%)

CMYK37%, 19.3%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,598,599

CSS custom property--colour: #556D87;

Brightness & contrast

Relative luminance0.14618WCAG 2.x, 0 is black and 1 is white

Perceived brightness105.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.35:1

Contrast with white5.35:1WCAG normal text: AA

Contrast with black3.92:1WCAG normal text: Fail

Greyscale equivalent#6A6A6A

Inverted#AA9278

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#636E88no red cones; affects about 1% of men; ΔE 4.5 from the original

Deuteranopia#5D6886no green cones; the most common form, about 1% of men; ΔE 5.4 from the original

Tritanopia#457376no blue cones; rare, and affects men and women equally; ΔE 16.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text5.35:1WCAG large text: AAA

Contrast with black, large text3.92:1WCAG large text: AA

Named colours

Slate grey · ΔE 10.2 Light slate grey · ΔE 12.4 Steel blue · ΔE 16.9 Dim grey · ΔE 17.3 Gray · ΔE 19.2 Dark slate grey · ΔE 21.6

Nearest named CSS colourSlate grey (#708090)ΔE 10.15, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#876F55

Analogous#558687, #565587

Triadic#87556D, #6D8755

Split complementary#875655, #868755

Tetradic#875586, #876F55, #558756

Tints, shades & saturation

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

Lighter +40%#CAD4DE

Lighter +30%#ABBACA

Lighter +20%#8CA0B6

Lighter +10%#6C86A3

Darker −10%#415468

Darker −20%#2E3A48

Darker −30%#1A2129

Darker −40%#06080A

More saturated +25%#396CA3

Less saturated −25%#6E6E6E

Channel breakdown

R85

G109

B135

Red85 (33.3%)

Green109 (42.7%)

Blue135 (52.9%)

Hue211.2°

Saturation (HSL)22.73%

Lightness43.14%

Dominant channelBlue

Hex per channelR 55 · G 6D · B 87

Keep nerding

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

#556D87

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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