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Recognised as Colour

#3F4D6D

  • #3F4D6D
  • Blue
  • Dark
  • Nearest: Dark slate grey

#3F4D6D is a blue with RGB values 63, 77, 109 and HSL 222°, 27%, 34%. 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

#3F4D6D#3F4D6D
HEX#3F4D6D
RGBrgb(63, 77, 109)
RGB (0–1)0.2471, 0.302, 0.4275
RGB percentages24.7%, 30.2%, 42.7%
HSLhsl(221.7, 26.7%, 33.7%)
HSV / HSBhsv(221.7, 42.2%, 42.7%)
CMYK42.2%, 29.4%, 0%, 57.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,148,589
CSS custom property--colour: #3F4D6D;

Brightness & contrast

Relative luminance0.07469WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.42:1
Contrast with white8.42:1WCAG normal text: AAA
Contrast with black2.49:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#C0B292

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#42506Eno red cones; affects about 1% of men; ΔE 1.8 from the original
Deuteranopia#3D4B6Cno green cones; the most common form, about 1% of men; ΔE 1.1 from the original
Tritanopia#305458no blue cones; rare, and affects men and women equally; ΔE 20.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.42:1WCAG large text: AAA
Contrast with black, large text2.49:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 22.5Slate grey · ΔE 22.9Dim grey · ΔE 23.6Steel blue · ΔE 24.2Light slate grey · ΔE 25.5Gray · ΔE 29.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 22.54, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6D5F3F
Analogous#3F646D, #483F6D
Triadic#6D3F4D, #4D6D3F
Split complementary#6D483F, #646D3F
Tetradic#6D3F64, #6D5F3F, #3F6D48

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AAB5CE
Lighter +30%#8A99BB
Lighter +20%#697DA9
Lighter +10%#52648D
Darker −10%#2C364D
Darker −20%#1A1F2C
Darker −30%#07090C
Darker −40%#000000
More saturated +25%#2A4583
Less saturated −25%#555558

Channel breakdown

R63
G77
B109
Red63 (24.7%)
Green77 (30.2%)
Blue109 (42.7%)
Hue221.74°
Saturation (HSL)26.74%
Lightness33.73%
Dominant channelBlue
Hex per channelR 3F · G 4D · B 6D

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Every value on this page was computed from “3f4d6d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.