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Recognised as Colour

#684BE5

  • #684BE5
  • Blue
  • Dark
  • Nearest: Medium slateblue

#684BE5 is a blue with RGB values 104, 75, 229 and HSL 251°, 75%, 60%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#684BE5#684BE5
HEX#684BE5
RGBrgb(104, 75, 229)
RGB (0–1)0.4078, 0.2941, 0.898
RGB percentages40.8%, 29.4%, 89.8%
HSLhsl(251.3, 74.8%, 59.6%)
HSV / HSBhsv(251.3, 67.2%, 89.8%)
CMYK54.6%, 67.2%, 0%, 10.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,835,173
CSS custom property--colour: #684BE5;

Brightness & contrast

Relative luminance0.13632WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.64:1
Contrast with white5.64:1WCAG normal text: AA
Contrast with black3.73:1WCAG normal text: Fail
Greyscale equivalent#5C5C5C
Inverted#97B41A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006CEAno red cones; affects about 1% of men; ΔE 28.6 from the original
Deuteranopia#0062E2no green cones; the most common form, about 1% of men; ΔE 24.9 from the original
Tritanopia#2F7392no blue cones; rare, and affects men and women equally; ΔE 80.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.64:1WCAG large text: AAA
Contrast with black, large text3.73:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 15.9Blue violet · ΔE 18.6Dark orchid · ΔE 19.7Slate blue · ΔE 22.5Dark violet · ΔE 25.6Royal blue · ΔE 26.9
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 15.93, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C8E54B
Analogous#4B7BE5, #B54BE5
Triadic#E5684B, #4BE568
Split complementary#E5B54B, #7BE54B
Tetradic#E54B7B, #C8E54B, #4BE5B5

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FEFDFF
Lighter +30%#D8D1F8
Lighter +20%#B3A4F2
Lighter +10%#8D78EB
Darker −10%#4420DD
Darker −20%#3619B1
Darker −30%#281384
Darker −40%#1B0D57
More saturated +25%#5831FF
Less saturated −25%#7865CB

Channel breakdown

R104
G75
B229
Red104 (40.8%)
Green75 (29.4%)
Blue229 (89.8%)
Hue251.3°
Saturation (HSL)74.76%
Lightness59.61%
Dominant channelBlue
Hex per channelR 68 · G 4B · B E5

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Every value on this page was computed from “684be5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.