Colour

#51697B

#51697B
Blue
Dark
Nearest: Slate grey

#51697B is a blue with RGB values 81, 105, 123 and HSL 206°, 21%, 40%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#51697B#51697B

HEX#51697B

RGBrgb(81, 105, 123)

RGB (0–1)0.3176, 0.4118, 0.4824

RGB percentages31.8%, 41.2%, 48.2%

HSLhsl(205.7, 20.6%, 40%)

HSV / HSBhsv(205.7, 34.1%, 48.2%)

CMYK34.1%, 14.6%, 0%, 51.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,335,419

CSS custom property--colour: #51697B;

Brightness & contrast

Relative luminance0.13283WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.74:1

Contrast with white5.74:1WCAG normal text: AA

Contrast with black3.66:1WCAG normal text: Fail

Greyscale equivalent#656565

Inverted#AE9684

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#61697Cno red cones; affects about 1% of men; ΔE 5.8 from the original

Deuteranopia#5C647Bno green cones; the most common form, about 1% of men; ΔE 6.7 from the original

Tritanopia#446D6Fno blue cones; rare, and affects men and women equally; ΔE 12 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text5.74:1WCAG large text: AAA

Contrast with black, large text3.66:1WCAG large text: AA

Named colours

Slate grey · ΔE 10.1 Light slate grey · ΔE 13 Dim grey · ΔE 13.6 Dark slate grey · ΔE 16.8 Gray · ΔE 17.1 Steel blue · ΔE 21.4

Nearest named CSS colourSlate grey (#708090)ΔE 10.13, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#7B6351

Analogous#517B78, #51547B

Triadic#7B5169, #697B51

Split complementary#7B5154, #7B7851

Tetradic#78517B, #7B6351, #547B51

Tints, shades & saturation

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

Lighter +40%#C2CED7

Lighter +30%#A3B5C2

Lighter +20%#849CAE

Lighter +10%#65839A

Darker −10%#3D4F5C

Darker −20%#29343E

Darker −30%#141A1F

Darker −40%#000000

More saturated +25%#386D95

Less saturated −25%#666666

Channel breakdown

R81

G105

B123

Red81 (31.8%)

Green105 (41.2%)

Blue123 (48.2%)

Hue205.71°

Saturation (HSL)20.59%

Lightness40%

Dominant channelBlue

Hex per channelR 51 · G 69 · B 7B

Keep nerding

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

#51697B

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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