Colour
#393F40
- #393F40
- Grey
- Dark
- Nearest: Dark slate grey
#393F40 is a grey with RGB values 57, 63, 64 and HSL 189°, 6%, 24%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#393F40#393F40
HEX#393F40
RGBrgb(57, 63, 64)
RGB (0–1)0.2235, 0.2471, 0.251
RGB percentages22.4%, 24.7%, 25.1%
HSLhsl(188.6, 5.8%, 23.7%)
HSV / HSBhsv(188.6, 10.9%, 25.1%)
CMYK10.9%, 1.6%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,751,744
CSS custom property--colour: #393F40;
Brightness & contrast
Relative luminance0.04795WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.72:1
Contrast with white10.72:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#C6C0BF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.72:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail
Named colours
Hue familygrey
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#403A39
Analogous#39403D, #393B40
Triadic#40393F, #3F4039
Split complementary#40393C, #403D39
Tetradic#3D3940, #403A39, #3B4039
Tints, shades & saturation
Channel breakdown
R57
G63
B64
Red57 (22.4%)
Green63 (24.7%)
Blue64 (25.1%)
Hue188.57°
Saturation (HSL)5.79%
Lightness23.73%
Dominant channelBlue
Hex per channelR 39 · G 3F · B 40
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