Colour

#003FD8

#003FD8
Blue
Dark
Nearest: Medium slateblue

#003FD8 is a blue with RGB values 0, 63, 216 and HSL 223°, 100%, 42%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#003FD8#003FD8

HEX#003FD8

RGBrgb(0, 63, 216)

RGB (0–1)0, 0.2471, 0.8471

RGB percentages0%, 24.7%, 84.7%

HSLhsl(222.5, 100%, 42.4%)

HSV / HSBhsv(222.5, 100%, 84.7%)

CMYK100%, 70.8%, 0%, 15.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,344

CSS custom property--colour: #003FD8;

Brightness & contrast

Relative luminance0.08513WCAG 2.x, 0 is black and 1 is white

Perceived brightness87.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.77:1

Contrast with white7.77:1WCAG normal text: AAA

Contrast with black2.7:1WCAG normal text: Fail

Greyscale equivalent#3D3D3D

Inverted#FFC027

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#005CDDno red cones; affects about 1% of men; ΔE 20.6 from the original

Deuteranopia#0049D5no green cones; the most common form, about 1% of men; ΔE 9.2 from the original

Tritanopia#006B87no blue cones; rare, and affects men and women equally; ΔE 84.4 from the original

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

Contrast with white, large text7.77:1WCAG large text: AAA

Contrast with black, large text2.7:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 23.6 Dark blue · ΔE 24.4 Medium blue · ΔE 26.3 Blue violet · ΔE 26.5 Slate blue · ΔE 27.1 Navy · ΔE 27.6

Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 23.64, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#D89900

Analogous#00ABD8, #2D00D8

Triadic#D8003F, #3FD800

Split complementary#D82D00, #ABD800

Tetradic#D800AB, #D89900, #00D82D

Tints, shades & saturation

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

Lighter +40%#A5BFFF

Lighter +30%#729BFF

Lighter +20%#3F77FF

Lighter +10%#0C53FF

Darker −10%#0030A5

Darker −20%#002172

Darker −30%#00123F

Darker −40%#00030C

More saturated +25%#003FD8

Less saturated −25%#1B4ABD

Channel breakdown

G63

B216

Red0 (0%)

Green63 (24.7%)

Blue216 (84.7%)

Hue222.5°

Saturation (HSL)100%

Lightness42.35%

Dominant channelBlue

Hex per channelR 00 · G 3F · B D8

Keep nerding

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

#003FD8

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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