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Recognised as Colour

#645FBD

  • #645FBD
  • Blue
  • Dark
  • Nearest: Slate blue

#645FBD is a blue with RGB values 100, 95, 189 and HSL 243°, 42%, 56%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Slate blue.

Colour values

#645FBD#645FBD
HEX#645FBD
RGBrgb(100, 95, 189)
RGB (0–1)0.3922, 0.3725, 0.7412
RGB percentages39.2%, 37.3%, 74.1%
HSLhsl(243.2, 41.6%, 55.7%)
HSV / HSBhsv(243.2, 49.7%, 74.1%)
CMYK47.1%, 49.7%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,578,109
CSS custom property--colour: #645FBD;

Brightness & contrast

Relative luminance0.14568WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.37:1
Contrast with white5.37:1WCAG normal text: AA
Contrast with black3.91:1WCAG normal text: Fail
Greyscale equivalent#676767
Inverted#9BA042

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#356EC0no red cones; affects about 1% of men; ΔE 17.5 from the original
Deuteranopia#3067BBno green cones; the most common form, about 1% of men; ΔE 15.6 from the original
Tritanopia#457385no blue cones; rare, and affects men and women equally; ΔE 50.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.37:1WCAG large text: AAA
Contrast with black, large text3.91:1WCAG large text: AA

Named colours

Slate blue · ΔE 12.7Medium purple · ΔE 14.1Dark slateblue · ΔE 15.8Royal blue · ΔE 16.5Rebecca purple · ΔE 20.2Medium slateblue · ΔE 22.8
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 12.69, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B8BD5F
Analogous#5F89BD, #935FBD
Triadic#BD645F, #5FBD64
Split complementary#BD935F, #89BD5F
Tetradic#BD5F89, #B8BD5F, #5FBD93

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F0EFF9
Lighter +30%#CDCBEA
Lighter +20%#AAA7DB
Lighter +10%#8783CC
Darker −10%#4944A5
Darker −20%#393581
Darker −30%#29265D
Darker −40%#191739
More saturated +25%#4B43D9
Less saturated −25%#7D7BA1

Channel breakdown

R100
G95
B189
Red100 (39.2%)
Green95 (37.3%)
Blue189 (74.1%)
Hue243.19°
Saturation (HSL)41.59%
Lightness55.69%
Dominant channelBlue
Hex per channelR 64 · G 5F · B BD

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Every value on this page was computed from “645fbd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.