Colour

#643DFB

#643DFB
Blue
Dark
Nearest: Blue violet

#643DFB is a blue with RGB values 100, 61, 251 and HSL 252°, 96%, 61%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Blue violet.

Colour values

#643DFB#643DFB

HEX#643DFB

RGBrgb(100, 61, 251)

RGB (0–1)0.3922, 0.2392, 0.9843

RGB percentages39.2%, 23.9%, 98.4%

HSLhsl(252.3, 96%, 61.2%)

HSV / HSBhsv(252.3, 75.7%, 98.4%)

CMYK60.2%, 75.7%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,569,467

CSS custom property--colour: #643DFB;

Brightness & contrast

Relative luminance0.13012WCAG 2.x, 0 is black and 1 is white

Perceived brightness111.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.83:1

Contrast with white5.83:1WCAG normal text: AA

Contrast with black3.6:1WCAG normal text: Fail

Greyscale equivalent#535353

Inverted#9BC204

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#006BFFno red cones; affects about 1% of men; ΔE 33.7 from the original

Deuteranopia#005EF8no green cones; the most common form, about 1% of men; ΔE 27.2 from the original

Tritanopia#00749Bno blue cones; rare, and affects men and women equally; ΔE 97.2 from the original

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

Contrast with white, large text5.83:1WCAG large text: AAA

Contrast with black, large text3.6:1WCAG large text: AA

Named colours

Blue violet · ΔE 14.5 Medium blue · ΔE 18.4 Dark violet · ΔE 21.7 Blue · ΔE 27 Dark orchid · ΔE 28 Medium slateblue · ΔE 33.7

Nearest named CSS colourBlue violet (#8A2BE2)ΔE 14.49, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#D4FB3D

Analogous#3D75FB, #C33DFB

Triadic#FB643D, #3DFB64

Split complementary#FBC33D, #75FB3D

Tetradic#FB3D75, #D4FB3D, #3DFBC3

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#DCD3FE

Lighter +20%#B4A1FD

Lighter +10%#8C6FFC

Darker −10%#3C0BFA

Darker −20%#2E04CE

Darker −30%#23039C

Darker −40%#17026A

More saturated +25%#6239FF

Less saturated −25%#7356E2

Channel breakdown

R100

G61

B251

Red100 (39.2%)

Green61 (23.9%)

Blue251 (98.4%)

Hue252.32°

Saturation (HSL)95.96%

Lightness61.18%

Dominant channelBlue

Hex per channelR 64 · G 3D · B FB

Keep nerding

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

#643DFB

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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