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Recognised as Colour

#51299D

  • #51299D
  • Violet
  • Dark
  • Nearest: Rebecca purple

#51299D is a violet with RGB values 81, 41, 157 and HSL 261°, 59%, 39%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#51299D#51299D
HEX#51299D
RGBrgb(81, 41, 157)
RGB (0–1)0.3176, 0.1608, 0.6157
RGB percentages31.8%, 16.1%, 61.6%
HSLhsl(260.7, 58.6%, 38.8%)
HSV / HSBhsv(260.7, 73.9%, 61.6%)
CMYK48.4%, 73.9%, 0%, 38.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,319,069
CSS custom property--colour: #51299D;

Brightness & contrast

Relative luminance0.0577WCAG 2.x, 0 is black and 1 is white
Perceived brightness75.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.75:1
Contrast with white9.75:1WCAG normal text: AAA
Contrast with black2.15:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#AED662

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0045A0no red cones; affects about 1% of men; ΔE 25.8 from the original
Deuteranopia#00429Bno green cones; the most common form, about 1% of men; ΔE 25.9 from the original
Tritanopia#394860no blue cones; rare, and affects men and women equally; ΔE 59.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.75:1WCAG large text: AAA
Contrast with black, large text2.15:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 10.3Indigo · ΔE 11.1Navy · ΔE 18.1Slate blue · ΔE 18.8Dark blue · ΔE 19.5Midnight blue · ΔE 19.7
Nearest named CSS colourRebecca purple (#663399)ΔE 10.26, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#759D29
Analogous#293B9D, #8B299D
Triadic#9D5129, #299D51
Split complementary#9D8B29, #3B9D29
Tetradic#9D293B, #759D29, #299D8B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFA9E9
Lighter +30%#A181DE
Lighter +20%#8358D4
Lighter +10%#6634C5
Darker −10%#3C1E75
Darker −20%#27144C
Darker −30%#120924
Darker −40%#000000
More saturated +25%#4910B6
Less saturated −25%#594284

Channel breakdown

R81
G41
B157
Red81 (31.8%)
Green41 (16.1%)
Blue157 (61.6%)
Hue260.69°
Saturation (HSL)58.59%
Lightness38.82%
Dominant channelBlue
Hex per channelR 51 · G 29 · B 9D

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Every value on this page was computed from “51299d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.