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Recognised as Colour

#678AC5

  • #678AC5
  • Blue
  • Dark
  • Nearest: Steel blue

#678AC5 is a blue with RGB values 103, 138, 197 and HSL 218°, 45%, 59%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#678AC5#678AC5
HEX#678AC5
RGBrgb(103, 138, 197)
RGB (0–1)0.4039, 0.5412, 0.7725
RGB percentages40.4%, 54.1%, 77.3%
HSLhsl(217.7, 44.8%, 58.8%)
HSV / HSBhsv(217.7, 47.7%, 77.3%)
CMYK47.7%, 29.9%, 0%, 22.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,785,733
CSS custom property--colour: #678AC5;

Brightness & contrast

Relative luminance0.25092WCAG 2.x, 0 is black and 1 is white
Perceived brightness137 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.02:1
Contrast with white3.49:1WCAG normal text: Fail
Contrast with black6.02:1WCAG normal text: AA
Greyscale equivalent#878787
Inverted#98753A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#748EC8no red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#6985C4no green cones; the most common form, about 1% of men; ΔE 3.7 from the original
Tritanopia#40979Fno blue cones; rare, and affects men and women equally; ΔE 35.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.49:1WCAG large text: AA
Contrast with black, large text6.02:1WCAG large text: AAA

Named colours

Steel blue · ΔE 9.6Cornflower blue · ΔE 16.5Light slate grey · ΔE 24.2Slate grey · ΔE 25Light skyblue · ΔE 27.6Deep skyblue · ΔE 27.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 9.57, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C5A267
Analogous#67B9C5, #7367C5
Triadic#C5678A, #8AC567
Split complementary#C57367, #B9C567
Tetradic#C567B9, #C5A267, #67C573

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FBFCFD
Lighter +30%#D6DFEF
Lighter +20%#B1C3E1
Lighter +10%#8CA6D3
Darker −10%#456EB4
Darker −20%#37588F
Darker −30%#29416A
Darker −40%#1B2B45
More saturated +25%#4D83DF
Less saturated −25%#8191AB

Channel breakdown

R103
G138
B197
Red103 (40.4%)
Green138 (54.1%)
Blue197 (77.3%)
Hue217.66°
Saturation (HSL)44.76%
Lightness58.82%
Dominant channelBlue
Hex per channelR 67 · G 8A · B C5

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Every value on this page was computed from “678ac5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.