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Recognised as Colour

#678CD9

  • #678CD9
  • Blue
  • Dark
  • Nearest: Cornflower blue

#678CD9 is a blue with RGB values 103, 140, 217 and HSL 221°, 60%, 63%. It is a dark colour, so black text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#678CD9#678CD9
HEX#678CD9
RGBrgb(103, 140, 217)
RGB (0–1)0.4039, 0.549, 0.851
RGB percentages40.4%, 54.9%, 85.1%
HSLhsl(220.5, 60%, 62.7%)
HSV / HSBhsv(220.5, 52.5%, 85.1%)
CMYK52.5%, 35.5%, 0%, 14.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,786,265
CSS custom property--colour: #678CD9;

Brightness & contrast

Relative luminance0.26649WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.33:1
Contrast with white3.32:1WCAG normal text: Fail
Contrast with black6.33:1WCAG normal text: AA
Greyscale equivalent#8A8A8A
Inverted#987326

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6E93DCno red cones; affects about 1% of men; ΔE 3.6 from the original
Deuteranopia#6088D7no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#2D9DA8no blue cones; rare, and affects men and women equally; ΔE 45.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.32:1WCAG large text: AA
Contrast with black, large text6.33:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 6.8Steel blue · ΔE 18.2Dodgerblue · ΔE 20.1Medium purple · ΔE 28.9Royal blue · ΔE 30Deep skyblue · ΔE 30
Nearest named CSS colourCornflower blue (#6495ED)ΔE 6.8, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D9B467
Analogous#67C5D9, #7B67D9
Triadic#D9678C, #8CD967
Split complementary#D97B67, #C5D967
Tetradic#D967C5, #D9B467, #67D97B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E1E9F8
Lighter +20%#B9CAED
Lighter +10%#90ABE3
Darker −10%#3E6DCF
Darker −20%#2C56AE
Darker −30%#214286
Darker −40%#172E5D
More saturated +25%#4F84F1
Less saturated −25%#7F94C1

Channel breakdown

R103
G140
B217
Red103 (40.4%)
Green140 (54.9%)
Blue217 (85.1%)
Hue220.53°
Saturation (HSL)60%
Lightness62.75%
Dominant channelBlue
Hex per channelR 67 · G 8C · B D9

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Every value on this page was computed from “678cd9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.