Colour

#6680DD

#6680DD
Blue
Dark
Nearest: Cornflower blue

#6680DD is a blue with RGB values 102, 128, 221 and HSL 227°, 64%, 63%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#6680DD#6680DD

HEX#6680DD

RGBrgb(102, 128, 221)

RGB (0–1)0.4, 0.502, 0.8667

RGB percentages40%, 50.2%, 86.7%

HSLhsl(226.9, 63.6%, 63.3%)

HSV / HSBhsv(226.9, 53.8%, 86.7%)

CMYK53.8%, 42.1%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,717,661

CSS custom property--colour: #6680DD;

Brightness & contrast

Relative luminance0.23484WCAG 2.x, 0 is black and 1 is white

Perceived brightness135.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.7:1

Contrast with white3.69:1WCAG normal text: Fail

Contrast with black5.7:1WCAG normal text: AA

Greyscale equivalent#818181

Inverted#997F22

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#598BE1no red cones; affects about 1% of men; ΔE 8.5 from the original

Deuteranopia#4B80DBno green cones; the most common form, about 1% of men; ΔE 6.1 from the original

Tritanopia#2894A4no blue cones; rare, and affects men and women equally; ΔE 53.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.69:1WCAG large text: AA

Contrast with black, large text5.7:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.1 Dodgerblue · ΔE 15.2 Royal blue · ΔE 19 Medium purple · ΔE 19.7 Slate blue · ΔE 22.7 Dark slateblue · ΔE 27.6

Nearest named CSS colourCornflower blue (#6495ED)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#DDC366

Analogous#66BBDD, #8766DD

Triadic#DD6680, #80DD66

Split complementary#DD8866, #BBDD66

Tetradic#DD66BC, #DDC366, #66DD88

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#E3E8F9

Lighter +20%#B9C5F0

Lighter +10%#90A3E6

Darker −10%#3C5DD4

Darker −20%#2847B5

Darker −30%#1F378B

Darker −40%#162661

More saturated +25%#4F73F4

Less saturated −25%#7D8DC6

Channel breakdown

R102

G128

B221

Red102 (40%)

Green128 (50.2%)

Blue221 (86.7%)

Hue226.89°

Saturation (HSL)63.64%

Lightness63.33%

Dominant channelBlue

Hex per channelR 66 · G 80 · B DD

Keep nerding

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

#6680DD

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

Nerdulate something else