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Colour

#4240BE

  • #4240BE
  • Blue
  • Dark
  • Nearest: Slate blue

#4240BE is a blue with RGB values 66, 64, 190 and HSL 241°, 50%, 50%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#4240BE#4240BE
HEX#4240BE
RGBrgb(66, 64, 190)
RGB (0–1)0.2588, 0.251, 0.7451
RGB percentages25.9%, 25.1%, 74.5%
HSLhsl(241, 49.6%, 49.8%)
HSV / HSBhsv(241, 66.3%, 74.5%)
CMYK65.3%, 66.3%, 0%, 25.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,341,950
CSS custom property--colour: #4240BE;

Brightness & contrast

Relative luminance0.08543WCAG 2.x, 0 is black and 1 is white
Perceived brightness88.4 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#4A4A4A
Inverted#BDBF41

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0058C2no red cones; affects about 1% of men; ΔE 20.4 from the original
Deuteranopia#004DBCno green cones; the most common form, about 1% of men; ΔE 14.7 from the original
Tritanopia#006179no blue cones; rare, and affects men and women equally; ΔE 71.3 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 13.6Medium slateblue · ΔE 17.1Royal blue · ΔE 18.6Rebecca purple · ΔE 19.1Indigo · ΔE 22.6Dark blue · ΔE 23.1
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 13.6, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BCBE40
Analogous#407DBE, #8140BE
Triadic#BE4240, #40BE42
Split complementary#BE8140, #7DBE40
Tetradic#BE407D, #BCBE40, #40BE81

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9D8F2
Lighter +30%#B3B2E5
Lighter +20%#8D8CD8
Lighter +10%#6766CB
Darker −10%#353398
Darker −20%#272672
Darker −30%#1A194C
Darker −40%#0D0D25
More saturated +25%#2320DE
Less saturated −25%#61609E

Channel breakdown

R66
G64
B190
Red66 (25.9%)
Green64 (25.1%)
Blue190 (74.5%)
Hue240.95°
Saturation (HSL)49.61%
Lightness49.8%
Dominant channelBlue
Hex per channelR 42 · G 40 · B BE

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Every value on this page was computed from “4240be” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.