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Colour

#3F4446

  • #3F4446
  • Grey
  • Dark
  • Nearest: Dark slate grey

#3F4446 is a grey with RGB values 63, 68, 70 and HSL 197°, 5%, 26%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3F4446#3F4446
HEX#3F4446
RGBrgb(63, 68, 70)
RGB (0–1)0.2471, 0.2667, 0.2745
RGB percentages24.7%, 26.7%, 27.5%
HSLhsl(197.1, 5.3%, 26.1%)
HSV / HSBhsv(197.1, 10%, 27.5%)
CMYK10%, 2.9%, 0%, 72.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,146,246
CSS custom property--colour: #3F4446;

Brightness & contrast

Relative luminance0.05633WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.87:1
Contrast with white9.87:1WCAG normal text: AAA
Contrast with black2.13:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#C0BBB9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#434446no red cones; affects about 1% of men; ΔE 1.8 from the original
Deuteranopia#424346no green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#3D4545no blue cones; rare, and affects men and women equally; ΔE 1.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.87:1WCAG large text: AAA
Contrast with black, large text2.13:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 10.7Dim grey · ΔE 16.1Gray · ΔE 25.2Slate grey · ΔE 25.9Black · ΔE 28.6Light slate grey · ΔE 29
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 10.66, a distinctly different colour
Hue familygrey
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#46413F
Analogous#3F4645, #3F4146
Triadic#463F44, #44463F
Split complementary#463F41, #46453F
Tetradic#453F46, #46413F, #41463F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4AAAD
Lighter +30%#899295
Lighter +20%#6F787C
Lighter +10%#575E61
Darker −10%#272A2B
Darker −20%#0F1010
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2E4B57
Less saturated −25%#434343

Channel breakdown

R63
G68
B70
Red63 (24.7%)
Green68 (26.7%)
Blue70 (27.5%)
Hue197.14°
Saturation (HSL)5.26%
Lightness26.08%
Dominant channelBlue
Hex per channelR 3F · G 44 · B 46

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Every value on this page was computed from “3f4446” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.