Colour

#003FC7

#003FC7
Blue
Dark
Nearest: Slate blue

#003FC7 is a blue with RGB values 0, 63, 199 and HSL 221°, 100%, 39%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#003FC7#003FC7

HEX#003FC7

RGBrgb(0, 63, 199)

RGB (0–1)0, 0.2471, 0.7804

RGB percentages0%, 24.7%, 78%

HSLhsl(221, 100%, 39%)

HSV / HSBhsv(221, 100%, 78%)

CMYK100%, 68.3%, 0%, 22%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,327

CSS custom property--colour: #003FC7;

Brightness & contrast

Relative luminance0.07679WCAG 2.x, 0 is black and 1 is white

Perceived brightness82.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.28:1

Contrast with white8.28:1WCAG normal text: AAA

Contrast with black2.54:1WCAG normal text: Fail

Greyscale equivalent#3B3B3B

Inverted#FFC038

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0057CBno red cones; affects about 1% of men; ΔE 17.7 from the original

Deuteranopia#0046C5no green cones; the most common form, about 1% of men; ΔE 6.6 from the original

Tritanopia#00657Eno blue cones; rare, and affects men and women equally; ΔE 76.2 from the original

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

Contrast with white, large text8.28:1WCAG large text: AAA

Contrast with black, large text2.54:1WCAG large text: Fail

Named colours

Slate blue · ΔE 20.5 Medium slateblue · ΔE 20.9 Royal blue · ΔE 21.2 Dark blue · ΔE 22.5 Navy · ΔE 24 Rebecca purple · ΔE 27.3

Nearest named CSS colourSlate blue (#6A5ACD)ΔE 20.53, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#C78800

Analogous#00A3C7, #2400C7

Triadic#C7003F, #3FC700

Split complementary#C72400, #A3C700

Tetradic#C700A3, #C78800, #00C724

Tints, shades & saturation

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

Lighter +40%#94B6FF

Lighter +30%#6193FF

Lighter +20%#2E70FF

Lighter +10%#004FFA

Darker −10%#002F94

Darker −20%#001F61

Darker −30%#000F2E

Darker −40%#000000

More saturated +25%#003FC7

Less saturated −25%#1948AE

Channel breakdown

G63

B199

Red0 (0%)

Green63 (24.7%)

Blue199 (78%)

Hue221.01°

Saturation (HSL)100%

Lightness39.02%

Dominant channelBlue

Hex per channelR 00 · G 3F · B C7

Keep nerding

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

#003FC7

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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