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Recognised as Colour

#8581DB

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

#8581DB is a blue with RGB values 133, 129, 219 and HSL 243°, 56%, 68%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Medium purple.

Colour values

#8581DB#8581DB
HEX#8581DB
RGBrgb(133, 129, 219)
RGB (0–1)0.5216, 0.5059, 0.8588
RGB percentages52.2%, 50.6%, 85.9%
HSLhsl(242.7, 55.6%, 68.2%)
HSV / HSBhsv(242.7, 41.1%, 85.9%)
CMYK39.3%, 41.1%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,749,531
CSS custom property--colour: #8581DB;

Brightness & contrast

Relative luminance0.25802WCAG 2.x, 0 is black and 1 is white
Perceived brightness143.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.16:1
Contrast with white3.41:1WCAG normal text: Fail
Contrast with black6.16:1WCAG normal text: AA
Greyscale equivalent#888888
Inverted#7A7E24

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#628EDEno red cones; affects about 1% of men; ΔE 15.1 from the original
Deuteranopia#5F88D9no green cones; the most common form, about 1% of men; ΔE 13.7 from the original
Tritanopia#6C93A3no blue cones; rare, and affects men and women equally; ΔE 46.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.41:1WCAG large text: AA
Contrast with black, large text6.16:1WCAG large text: AAA

Named colours

Medium purple · ΔE 14.5Cornflower blue · ΔE 15Slate blue · ΔE 21.6Royal blue · ΔE 22.3Dodgerblue · ΔE 22.3Medium slateblue · ΔE 27.2
Nearest named CSS colourMedium purple (#9370DB)ΔE 14.53, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D7DB81
Analogous#81AADB, #B281DB
Triadic#DB8581, #81DB85
Split complementary#DBB281, #AADB81
Tetradic#DB81AA, #D7DB81, #81DBB2

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#F8F8FD
Lighter +20%#D2D0F2
Lighter +10%#ABA9E6
Darker −10%#5F59D0
Darker −20%#3D37BF
Darker −30%#302B98
Darker −40%#242070
More saturated +25%#736DEF
Less saturated −25%#9795C7

Channel breakdown

R133
G129
B219
Red133 (52.2%)
Green129 (50.6%)
Blue219 (85.9%)
Hue242.67°
Saturation (HSL)55.56%
Lightness68.24%
Dominant channelBlue
Hex per channelR 85 · G 81 · B DB

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