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Recognised as Colour

#643BBE

  • #643BBE
  • Violet
  • Dark
  • Nearest: Slate blue

#643BBE is a violet with RGB values 100, 59, 190 and HSL 259°, 53%, 49%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#643BBE#643BBE
HEX#643BBE
RGBrgb(100, 59, 190)
RGB (0–1)0.3922, 0.2314, 0.7451
RGB percentages39.2%, 23.1%, 74.5%
HSLhsl(258.8, 52.6%, 48.8%)
HSV / HSBhsv(258.8, 68.9%, 74.5%)
CMYK47.4%, 68.9%, 0%, 25.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,568,894
CSS custom property--colour: #643BBE;

Brightness & contrast

Relative luminance0.09555WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.21:1
Contrast with white7.21:1WCAG normal text: AAA
Contrast with black2.91:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#9BC441

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0059C2no red cones; affects about 1% of men; ΔE 28.5 from the original
Deuteranopia#0054BBno green cones; the most common form, about 1% of men; ΔE 28 from the original
Tritanopia#485C78no blue cones; rare, and affects men and women equally; ΔE 65.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.21:1WCAG large text: AAA
Contrast with black, large text2.91:1WCAG large text: Fail

Named colours

Slate blue · ΔE 15.4Rebecca purple · ΔE 16.8Medium slateblue · ΔE 16.9Dark orchid · ΔE 18.3Indigo · ΔE 19.3Dark blue · ΔE 23.2
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 15.43, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#95BE3B
Analogous#3B54BE, #A63BBE
Triadic#BE643B, #3BBE64
Split complementary#BEA53B, #54BE3B
Tetradic#BE3B54, #95BE3B, #3BBEA5

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DDD4F1
Lighter +30%#BEADE5
Lighter +20%#A086D9
Lighter +10%#815FCD
Darker −10%#502F97
Darker −20%#3B2370
Darker −30%#271749
Darker −40%#120B22
More saturated +25%#581CDD
Less saturated −25%#705A9F

Channel breakdown

R100
G59
B190
Red100 (39.2%)
Green59 (23.1%)
Blue190 (74.5%)
Hue258.78°
Saturation (HSL)52.61%
Lightness48.82%
Dominant channelBlue
Hex per channelR 64 · G 3B · B BE

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Every value on this page was computed from “643bbe” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.