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Recognised as Colour

#3F4E65

  • #3F4E65
  • Blue
  • Dark
  • Nearest: Dark slate grey

#3F4E65 is a blue with RGB values 63, 78, 101 and HSL 216°, 23%, 32%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3F4E65#3F4E65
HEX#3F4E65
RGBrgb(63, 78, 101)
RGB (0–1)0.2471, 0.3059, 0.3961
RGB percentages24.7%, 30.6%, 39.6%
HSLhsl(216.3, 23.2%, 32.2%)
HSV / HSBhsv(216.3, 37.6%, 39.6%)
CMYK37.6%, 22.8%, 0%, 60.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,148,837
CSS custom property--colour: #3F4E65;

Brightness & contrast

Relative luminance0.07445WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.44:1
Contrast with white8.44:1WCAG normal text: AAA
Contrast with black2.49:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#C0B19A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#464F66no red cones; affects about 1% of men; ΔE 2.3 from the original
Deuteranopia#424C64no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#335356no blue cones; rare, and affects men and women equally; ΔE 15 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.44:1WCAG large text: AAA
Contrast with black, large text2.49:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.9Dim grey · ΔE 19.2Slate grey · ΔE 20.7Light slate grey · ΔE 23.6Gray · ΔE 25.8Steel blue · ΔE 26.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.86, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#65563F
Analogous#3F6165, #433F65
Triadic#653F4E, #4E653F
Split complementary#65433F, #61653F
Tetradic#653F61, #65563F, #3F6543

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8B5C8
Lighter +30%#889AB5
Lighter +20%#697FA1
Lighter +10%#536684
Darker −10%#2B3646
Darker −20%#181D26
Darker −30%#040507
Darker −40%#000000
More saturated +25%#2B4A7A
Less saturated −25%#525252

Channel breakdown

R63
G78
B101
Red63 (24.7%)
Green78 (30.6%)
Blue101 (39.6%)
Hue216.32°
Saturation (HSL)23.17%
Lightness32.16%
Dominant channelBlue
Hex per channelR 3F · G 4E · B 65

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Every value on this page was computed from “3f4e65” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.