Colour

#001BB9

#001BB9
Blue
Dark
Nearest: Dark blue

#001BB9 is a blue with RGB values 0, 27, 185 and HSL 231°, 100%, 36%. It is a dark colour, so white text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#001BB9#001BB9

HEX#001BB9

RGBrgb(0, 27, 185)

RGB (0–1)0, 0.1059, 0.7255

RGB percentages0%, 10.6%, 72.5%

HSLhsl(231.2, 100%, 36.3%)

HSV / HSBhsv(231.2, 100%, 72.5%)

CMYK100%, 85.4%, 0%, 27.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer7,097

CSS custom property--colour: #001BB9;

Brightness & contrast

Relative luminance0.04287WCAG 2.x, 0 is black and 1 is white

Perceived brightness65.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.31:1

Contrast with white11.31:1WCAG normal text: AAA

Contrast with black1.86:1WCAG normal text: Fail

Greyscale equivalent#212121

Inverted#FFE446

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0043BDno red cones; affects about 1% of men; ΔE 26.3 from the original

Deuteranopia#0031B6no green cones; the most common form, about 1% of men; ΔE 15.5 from the original

Tritanopia#00516Eno blue cones; rare, and affects men and women equally; ΔE 86.5 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text11.31:1WCAG large text: AAA

Contrast with black, large text1.86:1WCAG large text: Fail

Named colours

Dark blue · ΔE 15.7 Medium blue · ΔE 17.2 Navy · ΔE 20.6 Blue violet · ΔE 24.2 Indigo · ΔE 27.4 Dark violet · ΔE 28.6

Nearest named CSS colourDark blue (#00008B)ΔE 15.7, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#B99E00

Analogous#0078B9, #4200B9

Triadic#B9001B, #1BB900

Split complementary#B94100, #78B900

Tetradic#B90077, #B99E00, #00B941

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#8698FF

Lighter +30%#536CFF

Lighter +20%#2041FF

Lighter +10%#0022EC

Darker −10%#001486

Darker −20%#000C53

Darker −30%#000520

Darker −40%#000000

More saturated +25%#001BB9

Less saturated −25%#172BA2

Channel breakdown

G27

B185

Red0 (0%)

Green27 (10.6%)

Blue185 (72.5%)

Hue231.24°

Saturation (HSL)100%

Lightness36.27%

Dominant channelBlue

Hex per channelR 00 · G 1B · B B9

Keep nerding

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#001BB9

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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