Colour

#003FB7

#003FB7
Blue
Dark
Nearest: Slate blue

#003FB7 is a blue with RGB values 0, 63, 183 and HSL 219°, 100%, 36%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#003FB7#003FB7

HEX#003FB7

RGBrgb(0, 63, 183)

RGB (0–1)0, 0.2471, 0.7176

RGB percentages0%, 24.7%, 71.8%

HSLhsl(219.3, 100%, 35.9%)

HSV / HSBhsv(219.3, 100%, 71.8%)

CMYK100%, 65.6%, 0%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,311

CSS custom property--colour: #003FB7;

Brightness & contrast

Relative luminance0.06974WCAG 2.x, 0 is black and 1 is white

Perceived brightness78.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.77:1

Contrast with white8.77:1WCAG normal text: AAA

Contrast with black2.39:1WCAG normal text: Fail

Greyscale equivalent#3A3A3A

Inverted#FFC048

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0053BBno red cones; affects about 1% of men; ΔE 14.8 from the original

Deuteranopia#0043B5no green cones; the most common form, about 1% of men; ΔE 4.4 from the original

Tritanopia#006075no blue cones; rare, and affects men and women equally; ΔE 69 from the original

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

Contrast with white, large text8.77:1WCAG large text: AAA

Contrast with black, large text2.39:1WCAG large text: Fail

Named colours

Slate blue · ΔE 16.9 Royal blue · ΔE 17.5 Medium slateblue · ΔE 22.1 Rebecca purple · ΔE 22.6 Midnight blue · ΔE 23.8 Navy · ΔE 24

Nearest named CSS colourSlate blue (#6A5ACD)ΔE 16.93, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#B77800

Analogous#009AB7, #1D00B7

Triadic#B7003F, #3FB700

Split complementary#B71D00, #9AB700

Tetradic#B7009A, #B77800, #00B71D

Tints, shades & saturation

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

Lighter +40%#84AEFF

Lighter +30%#518DFF

Lighter +20%#1E6BFF

Lighter +10%#0051EA

Darker −10%#002D84

Darker −20%#001C51

Darker −30%#000A1E

Darker −40%#000000

More saturated +25%#003FB7

Less saturated −25%#1746A0

Channel breakdown

G63

B183

Red0 (0%)

Green63 (24.7%)

Blue183 (71.8%)

Hue219.34°

Saturation (HSL)100%

Lightness35.88%

Dominant channelBlue

Hex per channelR 00 · G 3F · B B7

Keep nerding

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

#003FB7

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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