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Colour

#6581DE

  • #6581DE
  • Blue
  • Dark
  • Nearest: Cornflower blue

#6581DE is a blue with RGB values 101, 129, 222 and HSL 226°, 65%, 63%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#6581DE#6581DE
HEX#6581DE
RGBrgb(101, 129, 222)
RGB (0–1)0.3961, 0.5059, 0.8706
RGB percentages39.6%, 50.6%, 87.1%
HSLhsl(226.1, 64.7%, 63.3%)
HSV / HSBhsv(226.1, 54.5%, 87.1%)
CMYK54.5%, 41.9%, 0%, 12.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,652,382
CSS custom property--colour: #6581DE;

Brightness & contrast

Relative luminance0.23741WCAG 2.x, 0 is black and 1 is white
Perceived brightness135.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.75:1
Contrast with white3.65:1WCAG normal text: Fail
Contrast with black5.75:1WCAG normal text: AA
Greyscale equivalent#828282
Inverted#9A7E21

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5A8BE2no red cones; affects about 1% of men; ΔE 7.4 from the original
Deuteranopia#4B81DCno green cones; the most common form, about 1% of men; ΔE 5.9 from the original
Tritanopia#2295A5no blue cones; rare, and affects men and women equally; ΔE 53.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.65:1WCAG large text: AA
Contrast with black, large text5.75:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.6Dodgerblue · ΔE 14.8Royal blue · ΔE 19.3Medium purple · ΔE 20.2Slate blue · ΔE 23.2Steel blue · ΔE 27.9
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.6, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DEC265
Analogous#65BEDE, #8565DE
Triadic#DE6581, #81DE65
Split complementary#DE8565, #BEDE65
Tetradic#DE65BE, #DEC265, #65DE85

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E3E8F9
Lighter +20%#B9C6F0
Lighter +10%#8FA3E7
Darker −10%#3B5FD5
Darker −20%#2748B6
Darker −30%#1E378C
Darker −40%#152762
More saturated +25%#4E74F5
Less saturated −25%#7C8EC7

Channel breakdown

R101
G129
B222
Red101 (39.6%)
Green129 (50.6%)
Blue222 (87.1%)
Hue226.12°
Saturation (HSL)64.71%
Lightness63.33%
Dominant channelBlue
Hex per channelR 65 · G 81 · B DE

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Every value on this page was computed from “6581de” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.