Recognised as Colour

#1B3AEF

#1B3AEF
Blue
Dark
Nearest: Medium blue

#1B3AEF is a blue with RGB values 27, 58, 239 and HSL 231°, 87%, 52%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1B3AEF#1B3AEF

HEX#1B3AEF

RGBrgb(27, 58, 239)

RGB (0–1)0.1059, 0.2275, 0.9373

RGB percentages10.6%, 22.7%, 93.7%

HSLhsl(231.2, 86.9%, 52.2%)

HSV / HSBhsv(231.2, 88.7%, 93.7%)

CMYK88.7%, 75.7%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,784,559

CSS custom property--colour: #1B3AEF;

Brightness & contrast

Relative luminance0.09491WCAG 2.x, 0 is black and 1 is white

Perceived brightness93.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.25:1

Contrast with white7.25:1WCAG normal text: AAA

Contrast with black2.9:1WCAG normal text: Fail

Greyscale equivalent#404040

Inverted#E4C510

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0061F4no red cones; affects about 1% of men; ΔE 26.8 from the original

Deuteranopia#004CECno green cones; the most common form, about 1% of men; ΔE 14.2 from the original

Tritanopia#007193no blue cones; rare, and affects men and women equally; ΔE 96.4 from the original

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

Contrast with white, large text7.25:1WCAG large text: AAA

Contrast with black, large text2.9:1WCAG large text: Fail

Named colours

Medium blue · ΔE 15.9 Blue violet · ΔE 21.7 Blue · ΔE 28.5 Dark violet · ΔE 28.8 Dark blue · ΔE 32.2 Dark orchid · ΔE 32.8

Nearest named CSS colourMedium blue (#0000CD)ΔE 15.95, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#EFD01B

Analogous#1BA4EF, #661BEF

Triadic#EF1B3A, #3AEF1B

Split complementary#EF661B, #A4EF1B

Tetradic#EF1BA4, #EFD01B, #1BEF66

Tints, shades & saturation

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

Lighter +40%#DADFFC

Lighter +30%#AAB6F9

Lighter +20%#7A8CF6

Lighter +10%#4B63F2

Darker −10%#0E29C9

Darker −20%#0B2099

Darker −30%#07166A

Darker −40%#040C3A

More saturated +25%#0B2FFF

Less saturated −25%#3A50D1

Channel breakdown

R27

G58

B239

Red27 (10.6%)

Green58 (22.7%)

Blue239 (93.7%)

Hue231.23°

Saturation (HSL)86.89%

Lightness52.16%

Dominant channelBlue

Hex per channelR 1B · G 3A · B EF

Keep nerding

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

#1B3AEF

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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