Recognised as Colour

#555F75

#555F75
Blue
Dark
Nearest: Slate grey

#555F75 is a blue with RGB values 85, 95, 117 and HSL 221°, 16%, 40%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#555F75#555F75

HEX#555F75

RGBrgb(85, 95, 117)

RGB (0–1)0.3333, 0.3725, 0.4588

RGB percentages33.3%, 37.3%, 45.9%

HSLhsl(221.3, 15.8%, 39.6%)

HSV / HSBhsv(221.3, 27.4%, 45.9%)

CMYK27.4%, 18.8%, 0%, 54.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,594,997

CSS custom property--colour: #555F75;

Brightness & contrast

Relative luminance0.114WCAG 2.x, 0 is black and 1 is white

Perceived brightness95 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.4:1

Contrast with white6.4:1WCAG normal text: AA

Contrast with black3.28:1WCAG normal text: Fail

Greyscale equivalent#5E5E5E

Inverted#AAA08A

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#586076no red cones; affects about 1% of men; ΔE 0.9 from the original

Deuteranopia#555E74no green cones; the most common form, about 1% of men; ΔE 0.5 from the original

Tritanopia#4D6366no blue cones; rare, and affects men and women equally; ΔE 12.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text6.4:1WCAG large text: AAA

Contrast with black, large text3.28:1WCAG large text: AA

Named colours

Slate grey · ΔE 13.5 Dim grey · ΔE 14.4 Light slate grey · ΔE 16.3 Dark slate grey · ΔE 18.9 Gray · ΔE 19.2 Steel blue · ΔE 22.9

Nearest named CSS colourSlate grey (#708090)ΔE 13.49, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#756B55

Analogous#556F75, #5B5575

Triadic#75555F, #5F7555

Split complementary#755B55, #6F7555

Tetradic#75556F, #756B55, #55755B

Tints, shades & saturation

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

Lighter +40%#C3C8D3

Lighter +30%#A5ADBE

Lighter +20%#8892A8

Lighter +10%#6A7793

Darker −10%#404757

Darker −20%#2A2F3A

Darker −30%#15171C

Darker −40%#000000

More saturated +25%#3C568E

Less saturated −25%#656565

Channel breakdown

R85

G95

B117

Red85 (33.3%)

Green95 (37.3%)

Blue117 (45.9%)

Hue221.25°

Saturation (HSL)15.84%

Lightness39.61%

Dominant channelBlue

Hex per channelR 55 · G 5F · B 75

Keep nerding

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

#555F75

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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