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Colour

#0000B9

  • #0000B9
  • Blue
  • Dark
  • Nearest: Medium blue

#0000B9 is a blue with RGB values 0, 0, 185 and HSL 240°, 100%, 36%. It is a dark colour, so white text on it reaches 12.3:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#0000B9#0000B9
HEX#0000B9
RGBrgb(0, 0, 185)
RGB (0–1)0, 0, 0.7255
RGB percentages0%, 0%, 72.5%
HSLhsl(240, 100%, 36.3%)
HSV / HSBhsv(240, 100%, 72.5%)
CMYK100%, 100%, 0%, 27.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer185
CSS custom property--colour: #0000B9;

Brightness & contrast

Relative luminance0.03503WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.35:1
Contrast with white12.35:1WCAG normal text: AAA
Contrast with black1.7:1WCAG normal text: Fail
Greyscale equivalent#0D0D0D
Inverted#FFFF46

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003EBDno red cones; affects about 1% of men; ΔE 31.8 from the original
Deuteranopia#002AB6no green cones; the most common form, about 1% of men; ΔE 20 from the original
Tritanopia#004C6Bno blue cones; rare, and affects men and women equally; ΔE 93.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.35:1WCAG large text: AAA
Contrast with black, large text1.7:1WCAG large text: Fail

Named colours

Medium blue · ΔE 8.9Dark blue · ΔE 21.2Blue violet · ΔE 23.8Navy · ΔE 26.4Dark violet · ΔE 26.8Blue · ΔE 30.5
Nearest named CSS colourMedium blue (#0000CD)ΔE 8.9, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B9B900
Analogous#005DB9, #5D00B9
Triadic#B90000, #00B900
Split complementary#B95D00, #5DB900
Tetradic#B9005D, #B9B900, #00B95D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8686FF
Lighter +30%#5353FF
Lighter +20%#2020FF
Lighter +10%#0000EC
Darker −10%#000086
Darker −20%#000053
Darker −30%#000020
Darker −40%#000000
More saturated +25%#0000B9
Less saturated −25%#1717A2

Channel breakdown

R0
G0
B185
Red0 (0%)
Green0 (0%)
Blue185 (72.5%)
Hue240°
Saturation (HSL)100%
Lightness36.27%
Dominant channelBlue
Hex per channelR 00 · G 00 · B B9

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Every value on this page was computed from “0000b9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.