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Colour

#0B509B

  • #0B509B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0B509B is a blue with RGB values 11, 80, 155 and HSL 211°, 87%, 33%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0B509B#0B509B
HEX#0B509B
RGBrgb(11, 80, 155)
RGB (0–1)0.0431, 0.3137, 0.6078
RGB percentages4.3%, 31.4%, 60.8%
HSLhsl(211.3, 86.7%, 32.5%)
HSV / HSBhsv(211.3, 92.9%, 60.8%)
CMYK92.9%, 48.4%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer741,531
CSS custom property--colour: #0B509B;

Brightness & contrast

Relative luminance0.08175WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.97:1
Contrast with white7.97:1WCAG normal text: AAA
Contrast with black2.64:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#F4AF64

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#24579Eno red cones; affects about 1% of men; ΔE 4.2 from the original
Deuteranopia#004B9Ano green cones; the most common form, about 1% of men; ΔE 3.7 from the original
Tritanopia#00626Eno blue cones; rare, and affects men and women equally; ΔE 44.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.97:1WCAG large text: AAA
Contrast with black, large text2.64:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.8Steel blue · ΔE 27.1Cornflower blue · ΔE 27.8Royal blue · ΔE 28.2Midnight blue · ΔE 28.5Slate blue · ΔE 30.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.75, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9B560B
Analogous#0B989B, #0E0B9B
Triadic#9B0B50, #509B0B
Split complementary#9B0E0B, #989B0B
Tetradic#9B0B98, #9B560B, #0B9B0E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7CB6F6
Lighter +30%#4D9CF2
Lighter +20%#1D82EF
Lighter +10%#0E69CB
Darker −10%#08376B
Darker −20%#041F3C
Darker −30%#01060C
Darker −40%#000000
More saturated +25%#0050A6
Less saturated −25%#205186

Channel breakdown

R11
G80
B155
Red11 (4.3%)
Green80 (31.4%)
Blue155 (60.8%)
Hue211.25°
Saturation (HSL)86.75%
Lightness32.55%
Dominant channelBlue
Hex per channelR 0B · G 50 · B 9B

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Every value on this page was computed from “0b509b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.