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Recognised as Colour

#3F6DAD

  • #3F6DAD
  • Blue
  • Dark
  • Nearest: Steel blue

#3F6DAD is a blue with RGB values 63, 109, 173 and HSL 215°, 47%, 46%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3F6DAD#3F6DAD
HEX#3F6DAD
RGBrgb(63, 109, 173)
RGB (0–1)0.2471, 0.4275, 0.6784
RGB percentages24.7%, 42.7%, 67.8%
HSLhsl(214.9, 46.6%, 46.3%)
HSV / HSBhsv(214.9, 63.6%, 67.8%)
CMYK63.6%, 37%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,156,845
CSS custom property--colour: #3F6DAD;

Brightness & contrast

Relative luminance0.15011WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.25:1
Contrast with white5.25:1WCAG normal text: AA
Contrast with black4:1WCAG normal text: Fail
Greyscale equivalent#686868
Inverted#C09252

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5172B0no red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#4267ACno green cones; the most common form, about 1% of men; ΔE 4.8 from the original
Tritanopia#007C85no blue cones; rare, and affects men and women equally; ΔE 39.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.25:1WCAG large text: AAA
Contrast with black, large text4:1WCAG large text: AA

Named colours

Steel blue · ΔE 13.1Cornflower blue · ΔE 19.8Dark slateblue · ΔE 26.1Dodgerblue · ΔE 28.6Slate grey · ΔE 30Light slate grey · ΔE 30.4
Nearest named CSS colourSteel blue (#4682B4)ΔE 13.06, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD7F3F
Analogous#3FA4AD, #483FAD
Triadic#AD3F6D, #6DAD3F
Split complementary#AD483F, #A4AD3F
Tetradic#AD3FA4, #AD7F3F, #3FAD48

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCD9EC
Lighter +30%#A6BEDF
Lighter +20%#81A2D1
Lighter +10%#5C87C3
Darker −10%#315588
Darker −20%#243E62
Darker −30%#16263D
Darker −40%#090F17
More saturated +25%#2168CB
Less saturated −25%#5D728F

Channel breakdown

R63
G109
B173
Red63 (24.7%)
Green109 (42.7%)
Blue173 (67.8%)
Hue214.91°
Saturation (HSL)46.61%
Lightness46.27%
Dominant channelBlue
Hex per channelR 3F · G 6D · B AD

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Every value on this page was computed from “3f6dad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.