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Recognised as Colour

#584CA8

  • #584CA8
  • Blue
  • Dark
  • Nearest: Dark slateblue

#584CA8 is a blue with RGB values 88, 76, 168 and HSL 248°, 38%, 48%. It is a dark colour, so white text on it reaches 7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#584CA8#584CA8
HEX#584CA8
RGBrgb(88, 76, 168)
RGB (0–1)0.3451, 0.298, 0.6588
RGB percentages34.5%, 29.8%, 65.9%
HSLhsl(247.8, 37.7%, 47.8%)
HSV / HSBhsv(247.8, 54.8%, 65.9%)
CMYK47.6%, 54.8%, 0%, 34.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,786,792
CSS custom property--colour: #584CA8;

Brightness & contrast

Relative luminance0.10071WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.97:1
Contrast with white6.97:1WCAG normal text: AA
Contrast with black3.01:1WCAG normal text: Fail
Greyscale equivalent#555555
Inverted#A7B357

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1B5CABno red cones; affects about 1% of men; ΔE 19.5 from the original
Deuteranopia#1757A6no green cones; the most common form, about 1% of men; ΔE 18.5 from the original
Tritanopia#3D6072no blue cones; rare, and affects men and women equally; ΔE 50 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.97:1WCAG large text: AAA
Contrast with black, large text3.01:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 9.9Slate blue · ΔE 13.9Rebecca purple · ΔE 14.5Medium purple · ΔE 18.7Royal blue · ΔE 20.1Midnight blue · ΔE 22.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 9.9, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9CA84C
Analogous#4C6EA8, #864CA8
Triadic#A8584C, #4CA858
Split complementary#A8864C, #6EA84C
Tetradic#A84C6E, #9CA84C, #4CA886

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7D4EC
Lighter +30%#B7B1DC
Lighter +20%#968ECC
Lighter +10%#766BBC
Darker −10%#463C85
Darker −20%#332C62
Darker −30%#211C3F
Darker −40%#0E0C1C
More saturated +25%#412DC6
Less saturated −25%#6F6A89

Channel breakdown

R88
G76
B168
Red88 (34.5%)
Green76 (29.8%)
Blue168 (65.9%)
Hue247.83°
Saturation (HSL)37.7%
Lightness47.84%
Dominant channelBlue
Hex per channelR 58 · G 4C · B A8

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Every value on this page was computed from “584ca8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.