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Colour

#678DDA

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

#678DDA is a blue with RGB values 103, 141, 218 and HSL 220°, 61%, 63%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#678DDA#678DDA
HEX#678DDA
RGBrgb(103, 141, 218)
RGB (0–1)0.4039, 0.5529, 0.8549
RGB percentages40.4%, 55.3%, 85.5%
HSLhsl(220.2, 60.8%, 62.9%)
HSV / HSBhsv(220.2, 52.8%, 85.5%)
CMYK52.8%, 35.3%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,786,522
CSS custom property--colour: #678DDA;

Brightness & contrast

Relative luminance0.26995WCAG 2.x, 0 is black and 1 is white
Perceived brightness142.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.4:1
Contrast with white3.28:1WCAG normal text: Fail
Contrast with black6.4:1WCAG normal text: AA
Greyscale equivalent#8A8A8A
Inverted#987225

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6E94DDno red cones; affects about 1% of men; ΔE 3.6 from the original
Deuteranopia#6189D8no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#2B9EA9no blue cones; rare, and affects men and women equally; ΔE 45.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.28:1WCAG large text: AA
Contrast with black, large text6.4:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 6.6Steel blue · ΔE 18.2Dodgerblue · ΔE 20Medium purple · ΔE 29.2Deep skyblue · ΔE 29.6Royal blue · ΔE 30.2
Nearest named CSS colourCornflower blue (#6495ED)ΔE 6.63, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DAB467
Analogous#67C7DA, #7B67DA
Triadic#DA678D, #8DDA67
Split complementary#DA7A67, #C7DA67
Tetradic#DA67C6, #DAB467, #67DA7A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E2E9F8
Lighter +20%#B9CBEE
Lighter +10%#90ACE4
Darker −10%#3E6ED0
Darker −20%#2B57B0
Darker −30%#214387
Darker −40%#172E5E
More saturated +25%#4F85F2
Less saturated −25%#7F95C2

Channel breakdown

R103
G141
B218
Red103 (40.4%)
Green141 (55.3%)
Blue218 (85.5%)
Hue220.17°
Saturation (HSL)60.85%
Lightness62.94%
Dominant channelBlue
Hex per channelR 67 · G 8D · B DA

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