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Recognised as Colour

#649DAD

  • #649DAD
  • Cyan
  • Dark
  • Nearest: Cadetblue

#649DAD is a cyan with RGB values 100, 157, 173 and HSL 193°, 31%, 54%. It is a dark colour, so black text on it reaches 7:1 contrast (AA for normal text). The nearest named colour is Cadetblue.

Colour values

#649DAD#649DAD
HEX#649DAD
RGBrgb(100, 157, 173)
RGB (0–1)0.3922, 0.6157, 0.6784
RGB percentages39.2%, 61.6%, 67.8%
HSLhsl(193.2, 30.8%, 53.5%)
HSV / HSBhsv(193.2, 42.2%, 67.8%)
CMYK42.2%, 9.2%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,593,965
CSS custom property--colour: #649DAD;

Brightness & contrast

Relative luminance0.2984WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.97:1
Contrast with white3.01:1WCAG normal text: Fail
Contrast with black6.97:1WCAG normal text: AA
Greyscale equivalent#929292
Inverted#9B6252

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#929AAEno red cones; affects about 1% of men; ΔE 16.1 from the original
Deuteranopia#8791ADno green cones; the most common form, about 1% of men; ΔE 17.1 from the original
Tritanopia#45A3A2no blue cones; rare, and affects men and women equally; ΔE 14.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.01:1WCAG large text: AA
Contrast with black, large text6.97:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 8.6Light slate grey · ΔE 13.7Slate grey · ΔE 15.4Sky blue · ΔE 19.1Dark cyan · ΔE 19.4Teal · ΔE 20.4
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 8.6, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD7464
Analogous#64AD98, #6479AD
Triadic#AD649D, #9DAD64
Split complementary#AD6479, #AD9864
Tetradic#9864AD, #AD7464, #79AD64

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9F1F4
Lighter +30%#C8DCE2
Lighter +20%#A7C7D0
Lighter +10%#85B2BF
Darker −10%#4D8291
Darker −20%#3B6470
Darker −30%#2A464E
Darker −40%#18282D
More saturated +25%#46AECB
Less saturated −25%#828C8F

Channel breakdown

R100
G157
B173
Red100 (39.2%)
Green157 (61.6%)
Blue173 (67.8%)
Hue193.15°
Saturation (HSL)30.8%
Lightness53.53%
Dominant channelBlue
Hex per channelR 64 · G 9D · B AD

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Every value on this page was computed from “649dad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.