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Recognised as Colour

#688EE8

  • #688EE8
  • Blue
  • Dark
  • Nearest: Cornflower blue

#688EE8 is a blue with RGB values 104, 142, 232 and HSL 222°, 74%, 66%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#688EE8#688EE8
HEX#688EE8
RGBrgb(104, 142, 232)
RGB (0–1)0.4078, 0.5569, 0.9098
RGB percentages40.8%, 55.7%, 91%
HSLhsl(222.2, 73.6%, 65.9%)
HSV / HSBhsv(222.2, 55.2%, 91%)
CMYK55.2%, 38.8%, 0%, 9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,852,328
CSS custom property--colour: #688EE8;

Brightness & contrast

Relative luminance0.28115WCAG 2.x, 0 is black and 1 is white
Perceived brightness145.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.62:1
Contrast with white3.17:1WCAG normal text: Fail
Contrast with black6.62:1WCAG normal text: AA
Greyscale equivalent#8C8C8C
Inverted#977117

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6997ECno red cones; affects about 1% of men; ΔE 5.1 from the original
Deuteranopia#598BE6no green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#17A2B0no blue cones; rare, and affects men and women equally; ΔE 52.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.17:1WCAG large text: AA
Contrast with black, large text6.62:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 3.9Dodgerblue · ΔE 14.1Royal blue · ΔE 24.1Medium purple · ΔE 24.6Steel blue · ΔE 25.3Slate blue · ΔE 28.8
Nearest named CSS colourCornflower blue (#6495ED)ΔE 3.87, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E8C268
Analogous#68CEE8, #8268E8
Triadic#E8688E, #8EE868
Split complementary#E88268, #CEE868
Tetradic#E868CE, #E8C268, #68E882

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EDF1FC
Lighter +20%#C1D0F5
Lighter +10%#94AFEF
Darker −10%#3C6DE1
Darker −20%#1F52CB
Darker −30%#18409F
Darker −40%#112E73
More saturated +25%#5285FE
Less saturated −25%#7E97D2

Channel breakdown

R104
G142
B232
Red104 (40.8%)
Green142 (55.7%)
Blue232 (91%)
Hue222.19°
Saturation (HSL)73.56%
Lightness65.88%
Dominant channelBlue
Hex per channelR 68 · G 8E · B E8

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Every value on this page was computed from “688ee8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.