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Recognised as Colour

#0B5BB1

  • #0B5BB1
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0B5BB1 is a blue with RGB values 11, 91, 177 and HSL 211°, 88%, 37%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0B5BB1#0B5BB1
HEX#0B5BB1
RGBrgb(11, 91, 177)
RGB (0–1)0.0431, 0.3569, 0.6941
RGB percentages4.3%, 35.7%, 69.4%
HSLhsl(211.1, 88.3%, 36.9%)
HSV / HSBhsv(211.1, 93.8%, 69.4%)
CMYK93.8%, 48.6%, 0%, 30.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer744,369
CSS custom property--colour: #0B5BB1;

Brightness & contrast

Relative luminance0.10728WCAG 2.x, 0 is black and 1 is white
Perceived brightness92 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.68:1
Contrast with white6.68:1WCAG normal text: AA
Contrast with black3.15:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#F4A44E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2764B4no red cones; affects about 1% of men; ΔE 5.6 from the original
Deuteranopia#0056AFno green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#00707Dno blue cones; rare, and affects men and women equally; ΔE 50.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.68:1WCAG large text: AAA
Contrast with black, large text3.15:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 19Royal blue · ΔE 21.5Cornflower blue · ΔE 23.1Dodgerblue · ΔE 23.5Slate blue · ΔE 25.6Steel blue · ΔE 28.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B1610B
Analogous#0BAEB1, #0E0BB1
Triadic#B10B5B, #5BB10B
Split complementary#B10E0B, #AEB10B
Tetradic#B10BAE, #B1610B, #0BB10E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90C2F8
Lighter +30%#60A8F5
Lighter +20%#308DF2
Lighter +10%#0E74E1
Darker −10%#084281
Darker −20%#052A51
Darker −30%#021121
Darker −40%#000000
More saturated +25%#005BBC
Less saturated −25%#225C9A

Channel breakdown

R11
G91
B177
Red11 (4.3%)
Green91 (35.7%)
Blue177 (69.4%)
Hue211.08°
Saturation (HSL)88.3%
Lightness36.86%
Dominant channelBlue
Hex per channelR 0B · G 5B · B B1

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Every value on this page was computed from “0b5bb1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.