Recognised as Colour

#1901CB

#1901CB
Blue
Dark
Nearest: Medium blue

#1901CB is a blue with RGB values 25, 1, 203 and HSL 247°, 99%, 40%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1901CB#1901CB

HEX#1901CB

RGBrgb(25, 1, 203)

RGB (0–1)0.098, 0.0039, 0.7961

RGB percentages9.8%, 0.4%, 79.6%

HSLhsl(247.1, 99%, 40%)

HSV / HSBhsv(247.1, 99.5%, 79.6%)

CMYK87.7%, 99.5%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,638,859

CSS custom property--colour: #1901CB;

Brightness & contrast

Relative luminance0.0454WCAG 2.x, 0 is black and 1 is white

Perceived brightness69.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.01:1

Contrast with white11.01:1WCAG normal text: AAA

Contrast with black1.91:1WCAG normal text: Fail

Greyscale equivalent#151515

Inverted#E6FE34

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0046D0no red cones; affects about 1% of men; ΔE 33.9 from the original

Deuteranopia#0031C8no green cones; the most common form, about 1% of men; ΔE 21.9 from the original

Tritanopia#005476no blue cones; rare, and affects men and women equally; ΔE 99.1 from the original

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

Contrast with white, large text11.01:1WCAG large text: AAA

Contrast with black, large text1.91:1WCAG large text: Fail

Named colours

Medium blue · ΔE 2 Blue violet · ΔE 22.7 Blue · ΔE 23.2 Dark violet · ΔE 25.8 Dark blue · ΔE 28.6 Navy · ΔE 33.8

Nearest named CSS colourMedium blue (#0000CD)ΔE 1.97, below the just-noticeable difference

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#B3CB01

Analogous#014ECB, #7E01CB

Triadic#CB1901, #01CB19

Split complementary#CB7E01, #4ECB01

Tetradic#CB014E, #B3CB01, #01CB7E

Tints, shades & saturation

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

Lighter +40%#A69AFF

Lighter +30%#7967FE

Lighter +20%#4C34FE

Lighter +10%#1F01FE

Darker −10%#130198

Darker −20%#0D0066

Darker −30%#060033

Darker −40%#000000

More saturated +25%#1800CC

Less saturated −25%#2C1AB2

Channel breakdown

R25

B203

Red25 (9.8%)

Green1 (0.4%)

Blue203 (79.6%)

Hue247.13°

Saturation (HSL)99.02%

Lightness40%

Dominant channelBlue

Hex per channelR 19 · G 01 · B CB

Keep nerding

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

#1901CB

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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