Recognised as Colour

#001BCD

#001BCD
Blue
Dark
Nearest: Medium blue

#001BCD is a blue with RGB values 0, 27, 205 and HSL 232°, 100%, 40%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#001BCD#001BCD

HEX#001BCD

RGBrgb(0, 27, 205)

RGB (0–1)0, 0.1059, 0.8039

RGB percentages0%, 10.6%, 80.4%

HSLhsl(232.1, 100%, 40.2%)

HSV / HSBhsv(232.1, 100%, 80.4%)

CMYK100%, 86.8%, 0%, 19.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer7,117

CSS custom property--colour: #001BCD;

Brightness & contrast

Relative luminance0.05192WCAG 2.x, 0 is black and 1 is white

Perceived brightness72.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.3:1

Contrast with white10.3:1WCAG normal text: AAA

Contrast with black2.04:1WCAG normal text: Fail

Greyscale equivalent#222222

Inverted#FFE432

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#004AD2no red cones; affects about 1% of men; ΔE 29.2 from the original

Deuteranopia#0036CAno green cones; the most common form, about 1% of men; ΔE 17.6 from the original

Tritanopia#00597Ano blue cones; rare, and affects men and women equally; ΔE 94.3 from the original

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

Contrast with white, large text10.3:1WCAG large text: AAA

Contrast with black, large text2.04:1WCAG large text: Fail

Named colours

Medium blue · ΔE 8.3 Blue violet · ΔE 22 Dark blue · ΔE 24.7 Dark violet · ΔE 26.7 Blue · ΔE 28.2 Navy · ΔE 29.8

Nearest named CSS colourMedium blue (#0000CD)ΔE 8.35, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#CDB200

Analogous#0081CD, #4C00CD

Triadic#CD001B, #1BCD00

Split complementary#CD4C00, #81CD00

Tetradic#CD0081, #CDB200, #00CD4C

Tints, shades & saturation

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

Lighter +40%#9AA7FF

Lighter +30%#677BFF

Lighter +20%#344FFF

Lighter +10%#0122FF

Darker −10%#00149A

Darker −20%#000E67

Darker −30%#000734

Darker −40%#000001

More saturated +25%#001BCD

Less saturated −25%#1A2EB3

Channel breakdown

G27

B205

Red0 (0%)

Green27 (10.6%)

Blue205 (80.4%)

Hue232.1°

Saturation (HSL)100%

Lightness40.2%

Dominant channelBlue

Hex per channelR 00 · G 1B · B CD

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#001BCD

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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