Colour

#51687C

#51687C
Blue
Dark
Nearest: Slate grey

#51687C is a blue with RGB values 81, 104, 124 and HSL 208°, 21%, 40%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#51687C#51687C

HEX#51687C

RGBrgb(81, 104, 124)

RGB (0–1)0.3176, 0.4078, 0.4863

RGB percentages31.8%, 40.8%, 48.6%

HSLhsl(207.9, 21%, 40.2%)

HSV / HSBhsv(207.9, 34.7%, 48.6%)

CMYK34.7%, 16.1%, 0%, 51.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,335,164

CSS custom property--colour: #51687C;

Brightness & contrast

Relative luminance0.13105WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.8:1

Contrast with white5.8:1WCAG normal text: AA

Contrast with black3.62:1WCAG normal text: Fail

Greyscale equivalent#656565

Inverted#AE9783

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#60687Dno red cones; affects about 1% of men; ΔE 5.4 from the original

Deuteranopia#5A637Cno green cones; the most common form, about 1% of men; ΔE 6.1 from the original

Tritanopia#436D6Eno blue cones; rare, and affects men and women equally; ΔE 14.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text5.8:1WCAG large text: AAA

Contrast with black, large text3.62:1WCAG large text: AA

Named colours

Slate grey · ΔE 10.5 Light slate grey · ΔE 13.3 Dim grey · ΔE 14.4 Dark slate grey · ΔE 17.6 Gray · ΔE 17.8 Steel blue · ΔE 20.6

Nearest named CSS colourSlate grey (#708090)ΔE 10.52, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#7C6551

Analogous#517C7B, #51527C

Triadic#7C5168, #687C51

Split complementary#7C5153, #7C7B51

Tetradic#7A517C, #7C6551, #527C51

Tints, shades & saturation

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

Lighter +40%#C2CDD7

Lighter +30%#A3B4C3

Lighter +20%#849BAF

Lighter +10%#65829B

Darker −10%#3D4E5D

Darker −20%#29343E

Darker −30%#151A1F

Darker −40%#000101

More saturated +25%#376A96

Less saturated −25%#676767

Channel breakdown

R81

G104

B124

Red81 (31.8%)

Green104 (40.8%)

Blue124 (48.6%)

Hue207.91°

Saturation (HSL)20.98%

Lightness40.2%

Dominant channelBlue

Hex per channelR 51 · G 68 · B 7C

Keep nerding

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

#51687C

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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