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Recognised as Colour

#4F517B

  • #4F517B
  • Blue
  • Dark
  • Nearest: Steel blue

#4F517B is a blue with RGB values 79, 81, 123 and HSL 237°, 22%, 40%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#4F517B#4F517B
HEX#4F517B
RGBrgb(79, 81, 123)
RGB (0–1)0.3098, 0.3176, 0.4824
RGB percentages31%, 31.8%, 48.2%
HSLhsl(237.3, 21.8%, 39.6%)
HSV / HSBhsv(237.3, 35.8%, 48.2%)
CMYK35.8%, 34.1%, 0%, 51.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,198,203
CSS custom property--colour: #4F517B;

Brightness & contrast

Relative luminance0.08977WCAG 2.x, 0 is black and 1 is white
Perceived brightness86.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.51:1
Contrast with white7.51:1WCAG normal text: AAA
Contrast with black2.8:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#B0AE84

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#44567Dno red cones; affects about 1% of men; ΔE 5.9 from the original
Deuteranopia#42537Ano green cones; the most common form, about 1% of men; ΔE 5.5 from the original
Tritanopia#435960no blue cones; rare, and affects men and women equally; ΔE 24 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.51:1WCAG large text: AAA
Contrast with black, large text2.8:1WCAG large text: Fail

Named colours

Steel blue · ΔE 23.3Dark slateblue · ΔE 24.6Slate grey · ΔE 24.8Light slate grey · ΔE 26.8Dim grey · ΔE 27.4Dark slate grey · ΔE 30.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 23.25, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7B794F
Analogous#4F677B, #634F7B
Triadic#7B4F51, #517B4F
Split complementary#7B634F, #677B4F
Tetradic#7B4F67, #7B794F, #4F7B63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C0C1D6
Lighter +30%#A1A2C2
Lighter +20%#8284AE
Lighter +10%#63659A
Darker −10%#3B3D5C
Darker −20%#27283D
Darker −30%#13141E
Darker −40%#000000
More saturated +25%#363A94
Less saturated −25%#656565

Channel breakdown

R79
G81
B123
Red79 (31%)
Green81 (31.8%)
Blue123 (48.2%)
Hue237.27°
Saturation (HSL)21.78%
Lightness39.61%
Dominant channelBlue
Hex per channelR 4F · G 51 · B 7B

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Every value on this page was computed from “4f517b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.