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Recognised as Colour

#634DC3

  • #634DC3
  • Blue
  • Dark
  • Nearest: Slate blue

#634DC3 is a blue with RGB values 99, 77, 195 and HSL 251°, 50%, 53%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Slate blue.

Colour values

#634DC3#634DC3
HEX#634DC3
RGBrgb(99, 77, 195)
RGB (0–1)0.3882, 0.302, 0.7647
RGB percentages38.8%, 30.2%, 76.5%
HSLhsl(251.2, 49.6%, 53.3%)
HSV / HSBhsv(251.2, 60.5%, 76.5%)
CMYK49.2%, 60.5%, 0%, 23.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,507,971
CSS custom property--colour: #634DC3;

Brightness & contrast

Relative luminance0.11901WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.21:1
Contrast with white6.21:1WCAG normal text: AA
Contrast with black3.38:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#9CB23C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0064C7no red cones; affects about 1% of men; ΔE 24.9 from the original
Deuteranopia#005EC1no green cones; the most common form, about 1% of men; ΔE 23.3 from the original
Tritanopia#416981no blue cones; rare, and affects men and women equally; ΔE 62 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.21:1WCAG large text: AAA
Contrast with black, large text3.38:1WCAG large text: AA

Named colours

Slate blue · ΔE 5.5Medium slateblue · ΔE 13Rebecca purple · ΔE 14.8Royal blue · ΔE 16Medium purple · ΔE 16.7Dark slateblue · ΔE 23.8
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 5.51, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ADC34D
Analogous#4D72C3, #9E4DC3
Triadic#C3634D, #4DC363
Split complementary#C39E4D, #72C34D
Tetradic#C34D72, #ADC34D, #4DC39E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9E6F6
Lighter +30%#C7BFEA
Lighter +20%#A699DD
Lighter +10%#8473D0
Darker −10%#4C38A5
Darker −20%#3B2B7F
Darker −30%#291E59
Darker −40%#171133
More saturated +25%#502FE1
Less saturated −25%#766BA5

Channel breakdown

R99
G77
B195
Red99 (38.8%)
Green77 (30.2%)
Blue195 (76.5%)
Hue251.19°
Saturation (HSL)49.58%
Lightness53.33%
Dominant channelBlue
Hex per channelR 63 · G 4D · B C3

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Every value on this page was computed from “634dc3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.