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Colour

#40449B

  • #40449B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#40449B is a blue with RGB values 64, 68, 155 and HSL 237°, 42%, 43%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#40449B#40449B
HEX#40449B
RGBrgb(64, 68, 155)
RGB (0–1)0.251, 0.2667, 0.6078
RGB percentages25.1%, 26.7%, 60.8%
HSLhsl(237.4, 41.6%, 42.9%)
HSV / HSBhsv(237.4, 58.7%, 60.8%)
CMYK58.7%, 56.1%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,211,867
CSS custom property--colour: #40449B;

Brightness & contrast

Relative luminance0.07591WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.34:1
Contrast with white8.34:1WCAG normal text: AAA
Contrast with black2.52:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#BFBB64

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#05529Eno red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#004A99no green cones; the most common form, about 1% of men; ΔE 12.2 from the original
Tritanopia#045868no blue cones; rare, and affects men and women equally; ΔE 52.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.34:1WCAG large text: AAA
Contrast with black, large text2.52:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 6.6Rebecca purple · ΔE 17.8Midnight blue · ΔE 18.5Slate blue · ΔE 19Royal blue · ΔE 22.6Medium purple · ΔE 24.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 6.6, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9B9740
Analogous#40729B, #69409B
Triadic#9B4044, #449B40
Split complementary#9B6A40, #719B40
Tetradic#9B4072, #9B9740, #409B6A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C1C3E6
Lighter +30%#9DA0D7
Lighter +20%#797DC8
Lighter +10%#555AB9
Darker −10%#313477
Darker −20%#222453
Darker −30%#13142F
Darker −40%#04050B
More saturated +25%#252BB6
Less saturated −25%#5B5D80

Channel breakdown

R64
G68
B155
Red64 (25.1%)
Green68 (26.7%)
Blue155 (60.8%)
Hue237.36°
Saturation (HSL)41.55%
Lightness42.94%
Dominant channelBlue
Hex per channelR 40 · G 44 · B 9B

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Every value on this page was computed from “40449b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.