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Colour

#3F3B59

  • #3F3B59
  • Blue
  • Dark
  • Nearest: Dark slate grey

#3F3B59 is a blue with RGB values 63, 59, 89 and HSL 248°, 20%, 29%. It is a dark colour, so white text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3F3B59#3F3B59
HEX#3F3B59
RGBrgb(63, 59, 89)
RGB (0–1)0.2471, 0.2314, 0.349
RGB percentages24.7%, 23.1%, 34.9%
HSLhsl(248, 20.3%, 29%)
HSV / HSBhsv(248, 33.7%, 34.9%)
CMYK29.2%, 33.7%, 0%, 65.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,143,961
CSS custom property--colour: #3F3B59;

Brightness & contrast

Relative luminance0.04906WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.6:1
Contrast with white10.6:1WCAG normal text: AAA
Contrast with black1.98:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#C0C4A6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#333F5Ano red cones; affects about 1% of men; ΔE 6.4 from the original
Deuteranopia#333E58no green cones; the most common form, about 1% of men; ΔE 6.3 from the original
Tritanopia#394046no blue cones; rare, and affects men and women equally; ΔE 16.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.6:1WCAG large text: AAA
Contrast with black, large text1.98:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 25.6Dim grey · ΔE 26.7Slate grey · ΔE 29.6Dark slateblue · ΔE 30.1Light slate grey · ΔE 32.3Steel blue · ΔE 32.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 25.57, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#55593B
Analogous#3B4659, #4E3B59
Triadic#593F3B, #3B593F
Split complementary#594E3B, #46593B
Tetradic#593B46, #55593B, #3B594E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4A0C0
Lighter +30%#8781AC
Lighter +20%#6A6496
Lighter +10%#554F78
Darker −10%#29273A
Darker −20%#14121C
Darker −30%#000000
Darker −40%#000000
More saturated +25%#31286B
Less saturated −25%#4A4A4A

Channel breakdown

R63
G59
B89
Red63 (24.7%)
Green59 (23.1%)
Blue89 (34.9%)
Hue248°
Saturation (HSL)20.27%
Lightness29.02%
Dominant channelBlue
Hex per channelR 3F · G 3B · B 59

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Every value on this page was computed from “3f3b59” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.