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Recognised as Colour

#648D99

  • #648D99
  • Cyan
  • Dark
  • Nearest: Light slate grey

#648D99 is a cyan with RGB values 100, 141, 153 and HSL 194°, 21%, 50%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Light slate grey.

Colour values

#648D99#648D99
HEX#648D99
RGBrgb(100, 141, 153)
RGB (0–1)0.3922, 0.5529, 0.6
RGB percentages39.2%, 55.3%, 60%
HSLhsl(193.6, 20.9%, 49.6%)
HSV / HSBhsv(193.6, 34.6%, 60%)
CMYK34.6%, 7.8%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,589,849
CSS custom property--colour: #648D99;

Brightness & contrast

Relative luminance0.24059WCAG 2.x, 0 is black and 1 is white
Perceived brightness131.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.81:1
Contrast with white3.61:1WCAG normal text: Fail
Contrast with black5.81:1WCAG normal text: AA
Greyscale equivalent#858585
Inverted#9B7266

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#858A9Ano red cones; affects about 1% of men; ΔE 12.7 from the original
Deuteranopia#7D8499no green cones; the most common form, about 1% of men; ΔE 13.1 from the original
Tritanopia#519191no blue cones; rare, and affects men and women equally; ΔE 10.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.61:1WCAG large text: AA
Contrast with black, large text5.81:1WCAG large text: AAA

Named colours

Light slate grey · ΔE 8.7Slate grey · ΔE 9.4Cadetblue · ΔE 10.6Gray · ΔE 15.7Dim grey · ΔE 19.4Teal · ΔE 19.7
Nearest named CSS colourLight slate grey (#778899)ΔE 8.74, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#997064
Analogous#64998B, #647399
Triadic#99648D, #8D9964
Split complementary#996473, #998B64
Tetradic#8B6499, #997064, #739964

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DFE8EA
Lighter +30%#C0D1D6
Lighter +20%#A1BAC2
Lighter +10%#82A4AE
Darker −10%#50717A
Darker −20%#3C545B
Darker −30%#28383C
Darker −40%#131B1E
More saturated +25%#449EB9
Less saturated −25%#7F7F7F

Channel breakdown

R100
G141
B153
Red100 (39.2%)
Green141 (55.3%)
Blue153 (60%)
Hue193.58°
Saturation (HSL)20.95%
Lightness49.61%
Dominant channelBlue
Hex per channelR 64 · G 8D · B 99

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Every value on this page was computed from “648d99” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.