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Recognised as Colour

#633FA0

  • #633FA0
  • Violet
  • Dark
  • Nearest: Rebecca purple

#633FA0 is a violet with RGB values 99, 63, 160 and HSL 262°, 43%, 44%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#633FA0#633FA0
HEX#633FA0
RGBrgb(99, 63, 160)
RGB (0–1)0.3882, 0.2471, 0.6275
RGB percentages38.8%, 24.7%, 62.7%
HSLhsl(262.3, 43.5%, 43.7%)
HSV / HSBhsv(262.3, 60.6%, 62.7%)
CMYK38.1%, 60.6%, 0%, 37.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,504,352
CSS custom property--colour: #633FA0;

Brightness & contrast

Relative luminance0.08746WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.64:1
Contrast with white7.64:1WCAG normal text: AAA
Contrast with black2.75:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#9CC05F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0054A3no red cones; affects about 1% of men; ΔE 27.1 from the original
Deuteranopia#17529Eno green cones; the most common form, about 1% of men; ΔE 26.5 from the original
Tritanopia#555469no blue cones; rare, and affects men and women equally; ΔE 47.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.64:1WCAG large text: AAA
Contrast with black, large text2.75:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 6Dark slateblue · ΔE 13.3Slate blue · ΔE 14.5Medium purple · ΔE 19.7Midnight blue · ΔE 20.6Indigo · ΔE 21.6
Nearest named CSS colourRebecca purple (#663399)ΔE 6.04, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7CA03F
Analogous#3F4BA0, #943FA0
Triadic#A0633F, #3FA063
Split complementary#A0943F, #4BA03F
Tetradic#A03F4B, #7CA03F, #3FA094

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D1C3E8
Lighter +30%#B49FD9
Lighter +20%#987ACB
Lighter +10%#7C56BC
Darker −10%#4C317B
Darker −20%#362257
Darker −30%#1F1432
Darker −40%#08050E
More saturated +25%#5C23BC
Less saturated −25%#6A5B84

Channel breakdown

R99
G63
B160
Red99 (38.8%)
Green63 (24.7%)
Blue160 (62.7%)
Hue262.27°
Saturation (HSL)43.5%
Lightness43.73%
Dominant channelBlue
Hex per channelR 63 · G 3F · B A0

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Every value on this page was computed from “633fa0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.