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Recognised as Colour

#4047BF

  • #4047BF
  • Blue
  • Dark
  • Nearest: Slate blue

#4047BF is a blue with RGB values 64, 71, 191 and HSL 237°, 50%, 50%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#4047BF#4047BF
HEX#4047BF
RGBrgb(64, 71, 191)
RGB (0–1)0.251, 0.2784, 0.749
RGB percentages25.1%, 27.8%, 74.9%
HSLhsl(236.7, 49.8%, 50%)
HSV / HSBhsv(236.7, 66.5%, 74.9%)
CMYK66.5%, 62.8%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,212,671
CSS custom property--colour: #4047BF;

Brightness & contrast

Relative luminance0.09358WCAG 2.x, 0 is black and 1 is white
Perceived brightness91.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.31:1
Contrast with white7.31:1WCAG normal text: AAA
Contrast with black2.87:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#BFB840

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005CC3no red cones; affects about 1% of men; ΔE 18.3 from the original
Deuteranopia#0051BDno green cones; the most common form, about 1% of men; ΔE 12.6 from the original
Tritanopia#00667Cno blue cones; rare, and affects men and women equally; ΔE 68.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.31:1WCAG large text: AAA
Contrast with black, large text2.87:1WCAG large text: Fail

Named colours

Slate blue · ΔE 10.6Royal blue · ΔE 14.6Medium slateblue · ΔE 16.5Rebecca purple · ΔE 18.6Medium purple · ΔE 23Dark slateblue · ΔE 24.5
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 10.61, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BFB840
Analogous#4086BF, #7940BF
Triadic#BF4047, #47BF40
Split complementary#BF7940, #86BF40
Tetradic#BF4086, #BFB840, #40BF79

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9DAF2
Lighter +30%#B3B5E5
Lighter +20%#8C91D9
Lighter +10%#666CCC
Darker −10%#333999
Darker −20%#262B73
Darker −30%#1A1C4C
Darker −40%#0D0E26
More saturated +25%#202BDF
Less saturated −25%#60639F

Channel breakdown

R64
G71
B191
Red64 (25.1%)
Green71 (27.8%)
Blue191 (74.9%)
Hue236.69°
Saturation (HSL)49.8%
Lightness50%
Dominant channelBlue
Hex per channelR 40 · G 47 · B BF

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Every value on this page was computed from “4047bf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.