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Recognised as Colour

#8581EF

  • #8581EF
  • Blue
  • Dark
  • Nearest: Medium purple

#8581EF is a blue with RGB values 133, 129, 239 and HSL 242°, 77%, 72%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Medium purple.

Colour values

#8581EF#8581EF
HEX#8581EF
RGBrgb(133, 129, 239)
RGB (0–1)0.5216, 0.5059, 0.9373
RGB percentages52.2%, 50.6%, 93.7%
HSLhsl(242.2, 77.5%, 72.2%)
HSV / HSBhsv(242.2, 46%, 93.7%)
CMYK44.4%, 46%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,749,551
CSS custom property--colour: #8581EF;

Brightness & contrast

Relative luminance0.26919WCAG 2.x, 0 is black and 1 is white
Perceived brightness146.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.38:1
Contrast with white3.29:1WCAG normal text: Fail
Contrast with black6.38:1WCAG normal text: AA
Greyscale equivalent#8A8A8A
Inverted#7A7E10

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5591F3no red cones; affects about 1% of men; ΔE 18 from the original
Deuteranopia#4F8AEDno green cones; the most common form, about 1% of men; ΔE 16.8 from the original
Tritanopia#6298ACno blue cones; rare, and affects men and women equally; ΔE 56.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.29:1WCAG large text: AA
Contrast with black, large text6.38:1WCAG large text: AAA

Named colours

Medium purple · ΔE 10.1Royal blue · ΔE 15.3Slate blue · ΔE 15.5Medium slateblue · ΔE 17.3Cornflower blue · ΔE 20.7Dodgerblue · ΔE 20.7
Nearest named CSS colourMedium purple (#9370DB)ΔE 10.11, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EBEF81
Analogous#81B4EF, #BC81EF
Triadic#EF8581, #81EF85
Split complementary#EFBC81, #B4EF81
Tetradic#EF81B4, #EBEF81, #81EFBC

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#DDDCFA
Lighter +10%#B1AEF5
Darker −10%#5954E9
Darker −20%#2D26E4
Darker −30%#1E18BF
Darker −40%#171292
More saturated +25%#7671FF
Less saturated −25%#9593DD

Channel breakdown

R133
G129
B239
Red133 (52.2%)
Green129 (50.6%)
Blue239 (93.7%)
Hue242.18°
Saturation (HSL)77.46%
Lightness72.16%
Dominant channelBlue
Hex per channelR 85 · G 81 · B EF

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Every value on this page was computed from “8581ef” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.