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Recognised as Colour

#053FBB

  • #053FBB
  • Blue
  • Dark
  • Nearest: Slate blue

#053FBB is a blue with RGB values 5, 63, 187 and HSL 221°, 95%, 38%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#053FBB#053FBB
HEX#053FBB
RGBrgb(5, 63, 187)
RGB (0–1)0.0196, 0.2471, 0.7333
RGB percentages2%, 24.7%, 73.3%
HSLhsl(220.9, 94.8%, 37.6%)
HSV / HSBhsv(220.9, 97.3%, 73.3%)
CMYK97.3%, 66.3%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer343,995
CSS custom property--colour: #053FBB;

Brightness & contrast

Relative luminance0.07175WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.62:1
Contrast with white8.62:1WCAG normal text: AAA
Contrast with black2.44:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#FAC044

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0054BFno red cones; affects about 1% of men; ΔE 15.6 from the original
Deuteranopia#0044B9no green cones; the most common form, about 1% of men; ΔE 5.2 from the original
Tritanopia#006177no blue cones; rare, and affects men and women equally; ΔE 70.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.62:1WCAG large text: AAA
Contrast with black, large text2.44:1WCAG large text: Fail

Named colours

Slate blue · ΔE 17.3Royal blue · ΔE 18Medium slateblue · ΔE 21.3Rebecca purple · ΔE 23.4Navy · ΔE 23.6Dark blue · ΔE 23.6
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 17.3, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB8105
Analogous#059ABB, #2605BB
Triadic#BB053F, #3FBB05
Split complementary#BB2605, #9ABB05
Tetradic#BB059A, #BB8105, #05BB26

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90B2FC
Lighter +30%#5E90FB
Lighter +20%#2D6EF9
Lighter +10%#0650ED
Darker −10%#042E89
Darker −20%#021E58
Darker −30%#010D26
Darker −40%#000000
More saturated +25%#003DC0
Less saturated −25%#1D48A3

Channel breakdown

R5
G63
B187
Red5 (2%)
Green63 (24.7%)
Blue187 (73.3%)
Hue220.88°
Saturation (HSL)94.79%
Lightness37.65%
Dominant channelBlue
Hex per channelR 05 · G 3F · B BB

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Every value on this page was computed from “053fbb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.