Colour

#646D9A

#646D9A
Blue
Dark
Nearest: Steel blue

#646D9A is a blue with RGB values 100, 109, 154 and HSL 230°, 21%, 50%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#646D9A#646D9A

HEX#646D9A

RGBrgb(100, 109, 154)

RGB (0–1)0.3922, 0.4275, 0.6039

RGB percentages39.2%, 42.7%, 60.4%

HSLhsl(230, 21.3%, 49.8%)

HSV / HSBhsv(230, 35.1%, 60.4%)

CMYK35.1%, 29.2%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,581,658

CSS custom property--colour: #646D9A;

Brightness & contrast

Relative luminance0.1598WCAG 2.x, 0 is black and 1 is white

Perceived brightness112.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5:1

Contrast with white5:1WCAG normal text: AA

Contrast with black4.2:1WCAG normal text: Fail

Greyscale equivalent#6E6E6E

Inverted#9B9265

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5F729Cno red cones; affects about 1% of men; ΔE 4.1 from the original

Deuteranopia#5B6D99no green cones; the most common form, about 1% of men; ΔE 3 from the original

Tritanopia#55767Dno blue cones; rare, and affects men and women equally; ΔE 25.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

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

Contrast with black, large text4.2:1WCAG large text: AA

Named colours

Steel blue · ΔE 14.8 Slate grey · ΔE 18.9 Light slate grey · ΔE 19.8 Dim grey · ΔE 26.8 Gray · ΔE 27.5 Cornflower blue · ΔE 28.1

Nearest named CSS colourSteel blue (#4682B4)ΔE 14.79, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#9A9164

Analogous#64889A, #76649A

Triadic#9A646D, #6D9A64

Split complementary#9A7664, #889A64

Tetradic#9A6488, #9A9164, #649A76

Tints, shades & saturation

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

Lighter +40%#DFE1EB

Lighter +30%#C1C4D6

Lighter +20%#A2A7C2

Lighter +10%#838AAE

Darker −10%#50577B

Darker −20%#3C415C

Darker −30%#282B3D

Darker −40%#14151E

More saturated +25%#4458BA

Less saturated −25%#7F7F7F

Channel breakdown

R100

G109

B154

Red100 (39.2%)

Green109 (42.7%)

Blue154 (60.4%)

Hue230°

Saturation (HSL)21.26%

Lightness49.8%

Dominant channelBlue

Hex per channelR 64 · G 6D · B 9A

Keep nerding

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

#646D9A

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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