Colour

#517D90

#517D90
Cyan
Dark
Nearest: Slate grey

#517D90 is a cyan with RGB values 81, 125, 144 and HSL 198°, 28%, 44%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#517D90#517D90

HEX#517D90

RGBrgb(81, 125, 144)

RGB (0–1)0.3176, 0.4902, 0.5647

RGB percentages31.8%, 49%, 56.5%

HSLhsl(198.1, 28%, 44.1%)

HSV / HSBhsv(198.1, 43.8%, 56.5%)

CMYK43.8%, 13.2%, 0%, 43.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,340,560

CSS custom property--colour: #517D90;

Brightness & contrast

Relative luminance0.1843WCAG 2.x, 0 is black and 1 is white

Perceived brightness116.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.69:1

Contrast with white4.48:1WCAG normal text: Fail

Contrast with black4.69:1WCAG normal text: AA

Greyscale equivalent#757575

Inverted#AE826F

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#737B91no red cones; affects about 1% of men; ΔE 12.2 from the original

Deuteranopia#6A7490no green cones; the most common form, about 1% of men; ΔE 12.9 from the original

Tritanopia#378383no blue cones; rare, and affects men and women equally; ΔE 15.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.48:1WCAG large text: AA

Contrast with black, large text4.69:1WCAG large text: AAA

Named colours

Slate grey · ΔE 9.3 Light slate grey · ΔE 10.4 Cadetblue · ΔE 16.7 Steel blue · ΔE 18.3 Gray · ΔE 18.3 Dim grey · ΔE 18.8

Nearest named CSS colourSlate grey (#708090)ΔE 9.34, clearly different but related

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#906451

Analogous#519084, #515E90

Triadic#90517D, #7D9051

Split complementary#90515E, #908451

Tetradic#845190, #906451, #5E9051

Tints, shades & saturation

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

Lighter +40%#CBDBE2

Lighter +30%#ABC4CF

Lighter +20%#8AAEBD

Lighter +10%#6997AB

Darker −10%#3F616F

Darker −20%#2C444F

Darker −30%#1A282E

Darker −40%#080C0D

More saturated +25%#3588AC

Less saturated −25%#6D7274

Channel breakdown

R81

G125

B144

Red81 (31.8%)

Green125 (49%)

Blue144 (56.5%)

Hue198.1°

Saturation (HSL)28%

Lightness44.12%

Dominant channelBlue

Hex per channelR 51 · G 7D · B 90

Keep nerding

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

#517D90

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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