Nerdulator> put something in

Recognised as Colour

#644DBF

  • #644DBF
  • Blue
  • Dark
  • Nearest: Slate blue

#644DBF is a blue with RGB values 100, 77, 191 and HSL 252°, 47%, 53%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Slate blue.

Colour values

#644DBF#644DBF
HEX#644DBF
RGBrgb(100, 77, 191)
RGB (0–1)0.3922, 0.302, 0.749
RGB percentages39.2%, 30.2%, 74.9%
HSLhsl(252.1, 47.1%, 52.5%)
HSV / HSBhsv(252.1, 59.7%, 74.9%)
CMYK47.6%, 59.7%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,573,503
CSS custom property--colour: #644DBF;

Brightness & contrast

Relative luminance0.11779WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.26:1
Contrast with white6.26:1WCAG normal text: AA
Contrast with black3.36:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#9BB240

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0063C3no red cones; affects about 1% of men; ΔE 24.8 from the original
Deuteranopia#005DBDno green cones; the most common form, about 1% of men; ΔE 23.2 from the original
Tritanopia#46677Eno blue cones; rare, and affects men and women equally; ΔE 59.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.26:1WCAG large text: AAA
Contrast with black, large text3.36:1WCAG large text: AA

Named colours

Slate blue · ΔE 5.1Rebecca purple · ΔE 13.4Medium slateblue · ΔE 14.4Medium purple · ΔE 15.8Royal blue · ΔE 16.2Dark slateblue · ΔE 21.7
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 5.1, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A8BF4D
Analogous#4D6FBF, #9D4DBF
Triadic#BF644D, #4DBF64
Split complementary#BF9D4D, #6FBF4D
Tetradic#BF4D6F, #A8BF4D, #4DBF9D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E7E3F5
Lighter +30%#C6BEE7
Lighter +20%#A598DA
Lighter +10%#8573CC
Darker −10%#4E39A0
Darker −20%#3C2C7A
Darker −30%#291E55
Darker −40%#17112F
More saturated +25%#522FDD
Less saturated −25%#766BA1

Channel breakdown

R100
G77
B191
Red100 (39.2%)
Green77 (30.2%)
Blue191 (74.9%)
Hue252.11°
Saturation (HSL)47.11%
Lightness52.55%
Dominant channelBlue
Hex per channelR 64 · G 4D · B BF

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “644dbf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.