Colour

#3F4953

#3F4953
Blue
Dark
Nearest: Dark slate grey

#3F4953 is a blue with RGB values 63, 73, 83 and HSL 210°, 14%, 29%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3F4953#3F4953

HEX#3F4953

RGBrgb(63, 73, 83)

RGB (0–1)0.2471, 0.2863, 0.3255

RGB percentages24.7%, 28.6%, 32.5%

HSLhsl(210, 13.7%, 28.6%)

HSV / HSBhsv(210, 24.1%, 32.5%)

CMYK24.1%, 12%, 0%, 67.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,147,539

CSS custom property--colour: #3F4953;

Brightness & contrast

Relative luminance0.06446WCAG 2.x, 0 is black and 1 is white

Perceived brightness71.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.17:1

Contrast with white9.17:1WCAG normal text: AAA

Contrast with black2.29:1WCAG normal text: Fail

Greyscale equivalent#484848

Inverted#C0B6AC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#454954no red cones; affects about 1% of men; ΔE 2.6 from the original

Deuteranopia#434753no green cones; the most common form, about 1% of men; ΔE 2.8 from the original

Tritanopia#3A4B4Cno blue cones; rare, and affects men and women equally; ΔE 6.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text9.17:1WCAG large text: AAA

Contrast with black, large text2.29:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 10.9 Dim grey · ΔE 15.8 Slate grey · ΔE 22.6 Gray · ΔE 24.2 Light slate grey · ΔE 25.7 Black · ΔE 31.4

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 10.88, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#53493F

Analogous#3F5353, #3F3F53

Triadic#533F49, #49533F

Split complementary#533F3F, #53533F

Tetradic#533F53, #53493F, #3F533F

Tints, shades & saturation

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

Lighter +40%#A4AFBA

Lighter +30%#8796A4

Lighter +20%#6B7C8D

Lighter +10%#556270

Darker −10%#292F36

Darker −20%#131619

Darker −30%#000000

Darker −40%#000000

More saturated +25%#2D4965

Less saturated −25%#494949

Channel breakdown

R63

G73

B83

Red63 (24.7%)

Green73 (28.6%)

Blue83 (32.5%)

Hue210°

Saturation (HSL)13.7%

Lightness28.63%

Dominant channelBlue

Hex per channelR 3F · G 49 · B 53

Keep nerding

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

#3F4953

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