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Recognised as Colour

#4140BF

  • #4140BF
  • Blue
  • Dark
  • Nearest: Slate blue

#4140BF is a blue with RGB values 65, 64, 191 and HSL 240°, 50%, 50%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#4140BF#4140BF
HEX#4140BF
RGBrgb(65, 64, 191)
RGB (0–1)0.2549, 0.251, 0.749
RGB percentages25.5%, 25.1%, 74.9%
HSLhsl(240.5, 49.8%, 50%)
HSV / HSBhsv(240.5, 66.5%, 74.9%)
CMYK66%, 66.5%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,276,415
CSS custom property--colour: #4140BF;

Brightness & contrast

Relative luminance0.08552WCAG 2.x, 0 is black and 1 is white
Perceived brightness88.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.75:1
Contrast with white7.75:1WCAG normal text: AAA
Contrast with black2.71:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#BEBF40

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0058C3no red cones; affects about 1% of men; ΔE 20.2 from the original
Deuteranopia#004DBDno green cones; the most common form, about 1% of men; ΔE 14.5 from the original
Tritanopia#00617Ano blue cones; rare, and affects men and women equally; ΔE 71.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.75:1WCAG large text: AAA
Contrast with black, large text2.71:1WCAG large text: Fail

Named colours

Slate blue · ΔE 14Medium slateblue · ΔE 17.1Royal blue · ΔE 18.8Rebecca purple · ΔE 19.6Indigo · ΔE 22.8Dark blue · ΔE 23
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 13.98, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BEBF40
Analogous#407FBF, #8140BF
Triadic#BF4140, #40BF41
Split complementary#BF8140, #7EBF40
Tetradic#BF407F, #BEBF40, #40BF81

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9D9F2
Lighter +30%#B3B3E5
Lighter +20%#8D8CD9
Lighter +10%#6766CC
Darker −10%#343399
Darker −20%#272673
Darker −30%#1A1A4C
Darker −40%#0D0D26
More saturated +25%#2220DF
Less saturated −25%#60609F

Channel breakdown

R65
G64
B191
Red65 (25.5%)
Green64 (25.1%)
Blue191 (74.9%)
Hue240.47°
Saturation (HSL)49.8%
Lightness50%
Dominant channelBlue
Hex per channelR 41 · G 40 · B BF

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Every value on this page was computed from “4140bf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.