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Recognised as Colour

#645CC1

  • #645CC1
  • Blue
  • Dark
  • Nearest: Slate blue

#645CC1 is a blue with RGB values 100, 92, 193 and HSL 245°, 45%, 56%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Slate blue.

Colour values

#645CC1#645CC1
HEX#645CC1
RGBrgb(100, 92, 193)
RGB (0–1)0.3922, 0.3608, 0.7569
RGB percentages39.2%, 36.1%, 75.7%
HSLhsl(244.8, 44.9%, 55.9%)
HSV / HSBhsv(244.8, 52.3%, 75.7%)
CMYK48.2%, 52.3%, 0%, 24.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,577,345
CSS custom property--colour: #645CC1;

Brightness & contrast

Relative luminance0.14214WCAG 2.x, 0 is black and 1 is white
Perceived brightness110.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.46:1
Contrast with white5.46:1WCAG normal text: AA
Contrast with black3.84:1WCAG normal text: Fail
Greyscale equivalent#656565
Inverted#9BA33E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2A6DC5no red cones; affects about 1% of men; ΔE 19.4 from the original
Deuteranopia#2466BFno green cones; the most common form, about 1% of men; ΔE 17.8 from the original
Tritanopia#437286no blue cones; rare, and affects men and women equally; ΔE 54 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.46:1WCAG large text: AAA
Contrast with black, large text3.84:1WCAG large text: AA

Named colours

Slate blue · ΔE 8.4Medium purple · ΔE 12.7Royal blue · ΔE 14Dark slateblue · ΔE 17.4Rebecca purple · ΔE 18.1Medium slateblue · ΔE 18.9
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 8.36, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B9C15C
Analogous#5C86C1, #975CC1
Triadic#C1645C, #5CC164
Split complementary#C1975C, #86C15C
Tetradic#C15C86, #B9C15C, #5CC197

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F1F0F9
Lighter +30%#CDCBEB
Lighter +20%#AAA6DD
Lighter +10%#8781CF
Darker −10%#4940AA
Darker −20%#393285
Darker −30%#292460
Darker −40%#19163B
More saturated +25%#4C40DD
Less saturated −25%#7C78A5

Channel breakdown

R100
G92
B193
Red100 (39.2%)
Green92 (36.1%)
Blue193 (75.7%)
Hue244.75°
Saturation (HSL)44.89%
Lightness55.88%
Dominant channelBlue
Hex per channelR 64 · G 5C · B C1

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Every value on this page was computed from “645cc1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.