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Recognised as Colour

#405F9B

  • #405F9B
  • Blue
  • Dark
  • Nearest: Steel blue

#405F9B is a blue with RGB values 64, 95, 155 and HSL 220°, 42%, 43%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#405F9B#405F9B
HEX#405F9B
RGBrgb(64, 95, 155)
RGB (0–1)0.251, 0.3725, 0.6078
RGB percentages25.1%, 37.3%, 60.8%
HSLhsl(219.6, 41.6%, 42.9%)
HSV / HSBhsv(219.6, 58.7%, 60.8%)
CMYK58.7%, 38.7%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,218,779
CSS custom property--colour: #405F9B;

Brightness & contrast

Relative luminance0.11641WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.31:1
Contrast with white6.31:1WCAG normal text: AA
Contrast with black3.33:1WCAG normal text: Fail
Greyscale equivalent#5D5D5D
Inverted#BFA064

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#46649Dno red cones; affects about 1% of men; ΔE 2.9 from the original
Deuteranopia#3A5C9Ano green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#006C75no blue cones; rare, and affects men and women equally; ΔE 38.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.31:1WCAG large text: AAA
Contrast with black, large text3.33:1WCAG large text: AA

Named colours

Steel blue · ΔE 17Dark slateblue · ΔE 21.8Cornflower blue · ΔE 25.1Slate grey · ΔE 30Light slate grey · ΔE 30.9Dodgerblue · ΔE 33.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 17.05, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9B7C40
Analogous#408C9B, #4F409B
Triadic#9B405F, #5F9B40
Split complementary#9B4F40, #8C9B40
Tetradic#9B408C, #9B7C40, #409B4F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C1CEE6
Lighter +30%#9DB1D7
Lighter +20%#7994C8
Lighter +10%#5577B9
Darker −10%#314977
Darker −20%#223353
Darker −30%#131D2F
Darker −40%#04070B
More saturated +25%#2556B6
Less saturated −25%#5B6880

Channel breakdown

R64
G95
B155
Red64 (25.1%)
Green95 (37.3%)
Blue155 (60.8%)
Hue219.56°
Saturation (HSL)41.55%
Lightness42.94%
Dominant channelBlue
Hex per channelR 40 · G 5F · B 9B

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Every value on this page was computed from “405f9b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.