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Recognised as Colour

#678FDD

  • #678FDD
  • Blue
  • Dark
  • Nearest: Cornflower blue

#678FDD is a blue with RGB values 103, 143, 221 and HSL 220°, 63%, 64%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#678FDD#678FDD
HEX#678FDD
RGBrgb(103, 143, 221)
RGB (0–1)0.4039, 0.5608, 0.8667
RGB percentages40.4%, 56.1%, 86.7%
HSLhsl(219.7, 63.4%, 63.5%)
HSV / HSBhsv(219.7, 53.4%, 86.7%)
CMYK53.4%, 35.3%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,787,037
CSS custom property--colour: #678FDD;

Brightness & contrast

Relative luminance0.27749WCAG 2.x, 0 is black and 1 is white
Perceived brightness144 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.55:1
Contrast with white3.21:1WCAG normal text: Fail
Contrast with black6.55:1WCAG normal text: AA
Greyscale equivalent#8C8C8C
Inverted#987022

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7096E0no red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#628BDBno green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#27A0ACno blue cones; rare, and affects men and women equally; ΔE 46 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.21:1WCAG large text: AA
Contrast with black, large text6.55:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 5.8Steel blue · ΔE 18.6Dodgerblue · ΔE 19.5Deep skyblue · ΔE 29.1Medium purple · ΔE 29.4Royal blue · ΔE 30.2
Nearest named CSS colourCornflower blue (#6495ED)ΔE 5.84, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DDB567
Analogous#67CADD, #7A67DD
Triadic#DD678F, #8FDD67
Split complementary#DD7A67, #CADD67
Tetradic#DD67CA, #DDB567, #67DD7A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E4EBF9
Lighter +20%#BACCF0
Lighter +10%#91AEE6
Darker −10%#3D70D4
Darker −20%#2958B5
Darker −30%#1F448C
Darker −40%#163062
More saturated +25%#5088F4
Less saturated −25%#7E96C6

Channel breakdown

R103
G143
B221
Red103 (40.4%)
Green143 (56.1%)
Blue221 (86.7%)
Hue219.66°
Saturation (HSL)63.44%
Lightness63.53%
Dominant channelBlue
Hex per channelR 67 · G 8F · B DD

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Every value on this page was computed from “678fdd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.