Colour

#3F4961

#3F4961
Blue
Dark
Nearest: Dark slate grey

#3F4961 is a blue with RGB values 63, 73, 97 and HSL 222°, 21%, 31%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3F4961#3F4961

HEX#3F4961

RGBrgb(63, 73, 97)

RGB (0–1)0.2471, 0.2863, 0.3804

RGB percentages24.7%, 28.6%, 38%

HSLhsl(222.4, 21.2%, 31.4%)

HSV / HSBhsv(222.4, 35.1%, 38%)

CMYK35.1%, 24.7%, 0%, 62%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,147,553

CSS custom property--colour: #3F4961;

Brightness & contrast

Relative luminance0.06685WCAG 2.x, 0 is black and 1 is white

Perceived brightness73.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.99:1

Contrast with white8.99:1WCAG normal text: AAA

Contrast with black2.34:1WCAG normal text: Fail

Greyscale equivalent#494949

Inverted#C0B69E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#414B62no red cones; affects about 1% of men; ΔE 1.1 from the original

Deuteranopia#3E4860no green cones; the most common form, about 1% of men; ΔE 0.4 from the original

Tritanopia#354E51no blue cones; rare, and affects men and women equally; ΔE 15.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text8.99:1WCAG large text: AAA

Contrast with black, large text2.34:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 18.4 Dim grey · ΔE 20.5 Slate grey · ΔE 22.8 Light slate grey · ΔE 25.6 Gray · ΔE 27.4 Steel blue · ΔE 28

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 18.37, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#61573F

Analogous#3F5A61, #463F61

Triadic#613F49, #49613F

Split complementary#61463F, #5A613F

Tetradic#613F5A, #61573F, #3F6146

Tints, shades & saturation

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

Lighter +40%#A6B0C6

Lighter +30%#8894B1

Lighter +20%#69789D

Lighter +10%#536080

Darker −10%#2B3242

Darker −20%#171A23

Darker −30%#030304

Darker −40%#000000

More saturated +25%#2B4175

Less saturated −25%#505050

Channel breakdown

R63

G73

B97

Red63 (24.7%)

Green73 (28.6%)

Blue97 (38%)

Hue222.35°

Saturation (HSL)21.25%

Lightness31.37%

Dominant channelBlue

Hex per channelR 3F · G 49 · B 61

Keep nerding

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

#3F4961

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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