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Recognised as Colour

#634D80

  • #634D80
  • Violet
  • Dark
  • Nearest: Dark slateblue

#634D80 is a violet with RGB values 99, 77, 128 and HSL 266°, 25%, 40%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#634D80#634D80
HEX#634D80
RGBrgb(99, 77, 128)
RGB (0–1)0.3882, 0.302, 0.502
RGB percentages38.8%, 30.2%, 50.2%
HSLhsl(265.9, 24.9%, 40.2%)
HSV / HSBhsv(265.9, 39.8%, 50.2%)
CMYK22.7%, 39.8%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,507,904
CSS custom property--colour: #634D80;

Brightness & contrast

Relative luminance0.09519WCAG 2.x, 0 is black and 1 is white
Perceived brightness91 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.23:1
Contrast with white7.23:1WCAG normal text: AAA
Contrast with black2.9:1WCAG normal text: Fail
Greyscale equivalent#555555
Inverted#9CB27F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#415682no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#46577Fno green cones; the most common form, about 1% of men; ΔE 15.6 from the original
Tritanopia#5E5560no blue cones; rare, and affects men and women equally; ΔE 25 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.23:1WCAG large text: AAA
Contrast with black, large text2.9:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.7Steel blue · ΔE 29.8Slate grey · ΔE 31.3Rebecca purple · ΔE 31.6Light slate grey · ΔE 32.8Dim grey · ΔE 33.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.66, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6A804D
Analogous#4D5180, #7D4D80
Triadic#80634D, #4D8063
Split complementary#807D4D, #51804D
Tetradic#804D51, #6A804D, #4D807D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBC0D9
Lighter +30%#B0A0C6
Lighter +20%#9680B3
Lighter +10%#7C60A0
Darker −10%#4A3A60
Darker −20%#322740
Darker −30%#191420
Darker −40%#000001
More saturated +25%#5F339A
Less saturated −25%#676767

Channel breakdown

R99
G77
B128
Red99 (38.8%)
Green77 (30.2%)
Blue128 (50.2%)
Hue265.88°
Saturation (HSL)24.88%
Lightness40.2%
Dominant channelBlue
Hex per channelR 63 · G 4D · B 80

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Every value on this page was computed from “634d80” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.