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Recognised as Colour

#643DBE

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

#643DBE is a violet with RGB values 100, 61, 190 and HSL 258°, 51%, 49%. It is a dark colour, so white text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#643DBE#643DBE
HEX#643DBE
RGBrgb(100, 61, 190)
RGB (0–1)0.3922, 0.2392, 0.7451
RGB percentages39.2%, 23.9%, 74.5%
HSLhsl(258.1, 51.4%, 49.2%)
HSV / HSBhsv(258.1, 67.9%, 74.5%)
CMYK47.4%, 67.9%, 0%, 25.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,569,406
CSS custom property--colour: #643DBE;

Brightness & contrast

Relative luminance0.09765WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.11:1
Contrast with white7.11:1WCAG normal text: AAA
Contrast with black2.95:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#9BC241

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005AC2no red cones; affects about 1% of men; ΔE 28.1 from the original
Deuteranopia#0055BBno green cones; the most common form, about 1% of men; ΔE 27.6 from the original
Tritanopia#485D78no blue cones; rare, and affects men and women equally; ΔE 64.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.11:1WCAG large text: AAA
Contrast with black, large text2.95:1WCAG large text: Fail

Named colours

Slate blue · ΔE 14.2Rebecca purple · ΔE 16Medium slateblue · ΔE 16.3Dark orchid · ΔE 19.1Indigo · ΔE 19.6Royal blue · ΔE 23.5
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 14.21, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#97BE3D
Analogous#3D57BE, #A43DBE
Triadic#BE643D, #3DBE64
Split complementary#BEA43D, #57BE3D
Tetradic#BE3D57, #97BE3D, #3DBEA4

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DED5F2
Lighter +30%#BFAFE5
Lighter +20%#A188D9
Lighter +10%#8262CC
Darker −10%#503197
Darker −20%#3B2471
Darker −30%#27184A
Darker −40%#130B24
More saturated +25%#581EDD
Less saturated −25%#705C9F

Channel breakdown

R100
G61
B190
Red100 (39.2%)
Green61 (23.9%)
Blue190 (74.5%)
Hue258.14°
Saturation (HSL)51.39%
Lightness49.22%
Dominant channelBlue
Hex per channelR 64 · G 3D · B BE

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