Colour

#646D85

#646D85
Blue
Dark
Nearest: Slate grey

#646D85 is a blue with RGB values 100, 109, 133 and HSL 224°, 14%, 46%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#646D85#646D85

HEX#646D85

RGBrgb(100, 109, 133)

RGB (0–1)0.3922, 0.4275, 0.5216

RGB percentages39.2%, 42.7%, 52.2%

HSLhsl(223.6, 14.2%, 45.7%)

HSV / HSBhsv(223.6, 24.8%, 52.2%)

CMYK24.8%, 18%, 0%, 47.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,581,637

CSS custom property--colour: #646D85;

Brightness & contrast

Relative luminance0.1534WCAG 2.x, 0 is black and 1 is white

Perceived brightness109.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.16:1

Contrast with white5.16:1WCAG normal text: AA

Contrast with black4.07:1WCAG normal text: Fail

Greyscale equivalent#6D6D6D

Inverted#9B927A

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#666F86no red cones; affects about 1% of men; ΔE 1 from the original

Deuteranopia#636C84no green cones; the most common form, about 1% of men; ΔE 0.4 from the original

Tritanopia#5C7275no blue cones; rare, and affects men and women equally; ΔE 13.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text5.16:1WCAG large text: AAA

Contrast with black, large text4.07:1WCAG large text: AA

Named colours

Slate grey · ΔE 8.9 Light slate grey · ΔE 11.3 Dim grey · ΔE 14.6 Gray · ΔE 16.3 Steel blue · ΔE 20 Dark slate grey · ΔE 23

Nearest named CSS colourSlate grey (#708090)ΔE 8.91, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#857C64

Analogous#647E85, #6C6485

Triadic#85646D, #6D8564

Split complementary#856B64, #7E8564

Tetradic#85647E, #857C64, #64856B

Tints, shades & saturation

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

Lighter +40%#D5D8E0

Lighter +30%#B8BDCA

Lighter +20%#9BA2B4

Lighter +10%#7E879E

Darker −10%#4E5568

Darker −20%#383D4B

Darker −30%#22252E

Darker −40%#0C0E11

More saturated +25%#4760A2

Less saturated −25%#757575

Channel breakdown

R100

G109

B133

Red100 (39.2%)

Green109 (42.7%)

Blue133 (52.2%)

Hue223.64°

Saturation (HSL)14.16%

Lightness45.69%

Dominant channelBlue

Hex per channelR 64 · G 6D · B 85

Keep nerding

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

#646D85

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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