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Colour

#645DC6

  • #645DC6
  • Blue
  • Dark
  • Nearest: Slate blue

#645DC6 is a blue with RGB values 100, 93, 198 and HSL 244°, 48%, 57%. 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

#645DC6#645DC6
HEX#645DC6
RGBrgb(100, 93, 198)
RGB (0–1)0.3922, 0.3647, 0.7765
RGB percentages39.2%, 36.5%, 77.6%
HSLhsl(244, 47.9%, 57.1%)
HSV / HSBhsv(244, 53%, 77.6%)
CMYK49.5%, 53%, 0%, 22.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,577,606
CSS custom property--colour: #645DC6;

Brightness & contrast

Relative luminance0.14615WCAG 2.x, 0 is black and 1 is white
Perceived brightness112 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.35:1
Contrast with white5.35:1WCAG normal text: AA
Contrast with black3.92:1WCAG normal text: Fail
Greyscale equivalent#666666
Inverted#9BA239

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#256ECAno red cones; affects about 1% of men; ΔE 19.5 from the original
Deuteranopia#1D67C4no green cones; the most common form, about 1% of men; ΔE 18 from the original
Tritanopia#407488no blue cones; rare, and affects men and women equally; ΔE 56.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.35:1WCAG large text: AAA
Contrast with black, large text3.92:1WCAG large text: AA

Named colours

Slate blue · ΔE 6.4Medium purple · ΔE 12.2Royal blue · ΔE 12.3Medium slateblue · ΔE 16.8Rebecca purple · ΔE 18.5Dark slateblue · ΔE 19.3
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 6.36, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BFC65D
Analogous#5D8AC6, #985DC6
Triadic#C6645D, #5DC664
Split complementary#C6985D, #8BC65D
Tetradic#C65D8B, #BFC65D, #5DC699

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4F4FB
Lighter +30%#D0CEEE
Lighter +20%#ACA8E1
Lighter +10%#8883D3
Darker −10%#463EB2
Darker −20%#37318C
Darker −30%#282466
Darker −40%#191740
More saturated +25%#4C42E1
Less saturated −25%#7C78AB

Channel breakdown

R100
G93
B198
Red100 (39.2%)
Green93 (36.5%)
Blue198 (77.6%)
Hue244°
Saturation (HSL)47.95%
Lightness57.06%
Dominant channelBlue
Hex per channelR 64 · G 5D · B C6

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Every value on this page was computed from “645dc6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.