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Recognised as Colour

#6B81DD

  • #6B81DD
  • Blue
  • Dark
  • Nearest: Cornflower blue

#6B81DD is a blue with RGB values 107, 129, 221 and HSL 228°, 63%, 64%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#6B81DD#6B81DD
HEX#6B81DD
RGBrgb(107, 129, 221)
RGB (0–1)0.4196, 0.5059, 0.8667
RGB percentages42%, 50.6%, 86.7%
HSLhsl(228.4, 62.6%, 64.3%)
HSV / HSBhsv(228.4, 51.6%, 86.7%)
CMYK51.6%, 41.6%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,045,597
CSS custom property--colour: #6B81DD;

Brightness & contrast

Relative luminance0.24047WCAG 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 5.81:1
Contrast with white3.61:1WCAG normal text: Fail
Contrast with black5.81:1WCAG normal text: AA
Greyscale equivalent#838383
Inverted#947E22

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5B8CE1no red cones; affects about 1% of men; ΔE 9 from the original
Deuteranopia#4F82DBno green cones; the most common form, about 1% of men; ΔE 7 from the original
Tritanopia#3795A4no blue cones; rare, and affects men and women equally; ΔE 52.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.61:1WCAG large text: AA
Contrast with black, large text5.81:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.1Dodgerblue · ΔE 16.1Medium purple · ΔE 19.2Royal blue · ΔE 19.8Slate blue · ΔE 22.9Dark slateblue · ΔE 27.7
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.1, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DDC76B
Analogous#6BBADD, #8E6BDD
Triadic#DD6B81, #81DD6B
Split complementary#DD8E6B, #BADD6B
Tetradic#DD6BBA, #DDC76B, #6BDD8E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E7EBFA
Lighter +20%#BEC8F0
Lighter +10%#94A4E7
Darker −10%#425ED3
Darker −20%#2A46B8
Darker −30%#21368E
Darker −40%#172665
More saturated +25%#5473F4
Less saturated −25%#828FC6

Channel breakdown

R107
G129
B221
Red107 (42%)
Green129 (50.6%)
Blue221 (86.7%)
Hue228.42°
Saturation (HSL)62.64%
Lightness64.31%
Dominant channelBlue
Hex per channelR 6B · G 81 · B DD

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Every value on this page was computed from “6b81dd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.