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Recognised as Colour

#3F3877

  • #3F3877
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3F3877 is a blue with RGB values 63, 56, 119 and HSL 247°, 36%, 34%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3F3877#3F3877
HEX#3F3877
RGBrgb(63, 56, 119)
RGB (0–1)0.2471, 0.2196, 0.4667
RGB percentages24.7%, 22%, 46.7%
HSLhsl(246.7, 36%, 34.3%)
HSV / HSBhsv(246.7, 52.9%, 46.7%)
CMYK47.1%, 52.9%, 0%, 53.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,143,223
CSS custom property--colour: #3F3877;

Brightness & contrast

Relative luminance0.05217WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.28:1
Contrast with white10.28:1WCAG normal text: AAA
Contrast with black2.04:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#C0C788

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1C4279no red cones; affects about 1% of men; ΔE 13.4 from the original
Deuteranopia#1A3F76no green cones; the most common form, about 1% of men; ΔE 12.8 from the original
Tritanopia#2D4552no blue cones; rare, and affects men and women equally; ΔE 35.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.28:1WCAG large text: AAA
Contrast with black, large text2.04:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 9.4Midnight blue · ΔE 21.4Rebecca purple · ΔE 25.8Slate blue · ΔE 32.7Medium purple · ΔE 35.3Steel blue · ΔE 35.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 9.38, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#707738
Analogous#385177, #5E3877
Triadic#773F38, #38773F
Split complementary#775E38, #517738
Tetradic#773851, #707738, #38775E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ABA6D5
Lighter +30%#8B83C5
Lighter +20%#6A61B4
Lighter +10%#51489A
Darker −10%#2D2854
Darker −20%#1A1732
Darker −30%#08070F
Darker −40%#000000
More saturated +25%#2E228D
Less saturated −25%#504E61

Channel breakdown

R63
G56
B119
Red63 (24.7%)
Green56 (22%)
Blue119 (46.7%)
Hue246.67°
Saturation (HSL)36%
Lightness34.31%
Dominant channelBlue
Hex per channelR 3F · G 38 · B 77

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Every value on this page was computed from “3f3877” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.