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Colour

#3F4249

  • #3F4249
  • Grey
  • Dark
  • Nearest: Dark slate grey

#3F4249 is a grey with RGB values 63, 66, 73 and HSL 222°, 7%, 27%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3F4249#3F4249
HEX#3F4249
RGBrgb(63, 66, 73)
RGB (0–1)0.2471, 0.2588, 0.2863
RGB percentages24.7%, 25.9%, 28.6%
HSLhsl(222, 7.4%, 26.7%)
HSV / HSBhsv(222, 13.7%, 28.6%)
CMYK13.7%, 9.6%, 0%, 71.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,145,737
CSS custom property--colour: #3F4249;

Brightness & contrast

Relative luminance0.05434WCAG 2.x, 0 is black and 1 is white
Perceived brightness66 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.06:1
Contrast with white10.06:1WCAG normal text: AAA
Contrast with black2.09:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#C0BDB6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#404249no red cones; affects about 1% of men; ΔE 0.4 from the original
Deuteranopia#3F4249no green cones; the most common form, about 1% of men; ΔE 0 from the original
Tritanopia#3D4344no blue cones; rare, and affects men and women equally; ΔE 4.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.06:1WCAG large text: AAA
Contrast with black, large text2.09:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 12.6Dim grey · ΔE 17.1Slate grey · ΔE 25.7Gray · ΔE 26.1Black · ΔE 28.3Light slate grey · ΔE 28.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 12.63, a distinctly different colour
Hue familygrey
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#49463F
Analogous#3F4749, #413F49
Triadic#493F42, #42493F
Split complementary#49413F, #47493F
Tetradic#493F47, #49463F, #3F4941

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4A8B0
Lighter +30%#888D99
Lighter +20%#6E7480
Lighter +10%#575B64
Darker −10%#27292E
Darker −20%#101112
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2E3B5A
Less saturated −25%#444444

Channel breakdown

R63
G66
B73
Red63 (24.7%)
Green66 (25.9%)
Blue73 (28.6%)
Hue222°
Saturation (HSL)7.35%
Lightness26.67%
Dominant channelBlue
Hex per channelR 3F · G 42 · B 49

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Every value on this page was computed from “3f4249” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.