Recognised as Colour

#1666AD

#1666AD
Blue
Dark
Nearest: Steel blue

#1666AD is a blue with RGB values 22, 102, 173 and HSL 208°, 77%, 38%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1666AD#1666AD

HEX#1666AD

RGBrgb(22, 102, 173)

RGB (0–1)0.0863, 0.4, 0.6784

RGB percentages8.6%, 40%, 67.8%

HSLhsl(208.2, 77.4%, 38.2%)

HSV / HSBhsv(208.2, 87.3%, 67.8%)

CMYK87.3%, 41%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,468,077

CSS custom property--colour: #1666AD;

Brightness & contrast

Relative luminance0.1269WCAG 2.x, 0 is black and 1 is white

Perceived brightness98.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.94:1

Contrast with white5.94:1WCAG normal text: AA

Contrast with black3.54:1WCAG normal text: Fail

Greyscale equivalent#5A5A5A

Inverted#E99952

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#436BB0no red cones; affects about 1% of men; ΔE 6.1 from the original

Deuteranopia#295EACno green cones; the most common form, about 1% of men; ΔE 7.4 from the original

Tritanopia#007781no blue cones; rare, and affects men and women equally; ΔE 41.6 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text5.94:1WCAG large text: AAA

Contrast with black, large text3.54:1WCAG large text: AA

Named colours

Steel blue · ΔE 17.7 Cornflower blue · ΔE 21 Dark slateblue · ΔE 25.1 Dodgerblue · ΔE 26.3 Royal blue · ΔE 31.2 Slate blue · ΔE 35

Nearest named CSS colourSteel blue (#4682B4)ΔE 17.68, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#AD5D16

Analogous#16ADA9, #161BAD

Triadic#AD1666, #66AD16

Split complementary#AD161B, #ADA916

Tetradic#A916AD, #AD5D16, #1BAD16

Tints, shades & saturation

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

Lighter +40%#9DCAF2

Lighter +30%#6FB2ED

Lighter +20%#4299E7

Lighter +10%#1C81DA

Darker −10%#104B80

Darker −20%#0A3153

Darker −30%#051625

Darker −40%#000000

More saturated +25%#0067C3

Less saturated −25%#2E6595

Channel breakdown

R22

G102

B173

Red22 (8.6%)

Green102 (40%)

Blue173 (67.8%)

Hue208.21°

Saturation (HSL)77.44%

Lightness38.24%

Dominant channelBlue

Hex per channelR 16 · G 66 · B AD

Keep nerding

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

#1666AD

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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