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Recognised as Colour

#66003F

  • #66003F
  • Magenta
  • Dark
  • Nearest: Purple

#66003F is a magenta with RGB values 102, 0, 63 and HSL 323°, 100%, 20%. It is a dark colour, so white text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Purple.

Colour values

#66003F#66003F
HEX#66003F
RGBrgb(102, 0, 63)
RGB (0–1)0.4, 0, 0.2471
RGB percentages40%, 0%, 24.7%
HSLhsl(322.9, 100%, 20%)
HSV / HSBhsv(322.9, 100%, 40%)
CMYK0%, 100%, 38.2%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,684,735
CSS custom property--colour: #66003F;

Brightness & contrast

Relative luminance0.03184WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.83:1
Contrast with white12.83:1WCAG normal text: AAA
Contrast with black1.64:1WCAG normal text: Fail
Greyscale equivalent#1A1A1A
Inverted#99FFC0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1A2740no red cones; affects about 1% of men; ΔE 42.9 from the original
Deuteranopia#36383Dno green cones; the most common form, about 1% of men; ΔE 44.7 from the original
Tritanopia#6F0022no blue cones; rare, and affects men and women equally; ΔE 22.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.83:1WCAG large text: AAA
Contrast with black, large text1.64:1WCAG large text: Fail

Named colours

Purple · ΔE 33Medium violet red · ΔE 36.3Dark magenta · ΔE 37.4Dark slateblue · ΔE 40Pale violetred · ΔE 40.7Rebecca purple · ΔE 40.9
Nearest named CSS colourPurple (#800080)ΔE 32.98, a distinctly different colour
Hue familymagenta
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#006627
Analogous#5A0066, #66000C
Triadic#3F6600, #003F66
Split complementary#0C6600, #00665A
Tetradic#665A00, #006627, #000C66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FF33B1
Lighter +30%#FF009D
Lighter +20%#CC007E
Lighter +10%#99005E
Darker −10%#33001F
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#66003F
Less saturated −25%#590D3C

Channel breakdown

R102
G0
B63
Red102 (40%)
Green0 (0%)
Blue63 (24.7%)
Hue322.94°
Saturation (HSL)100%
Lightness20%
Dominant channelRed
Hex per channelR 66 · G 00 · B 3F

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Every value on this page was computed from “66003f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.