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Colour

#668B93

  • #668B93
  • Cyan
  • Dark
  • Nearest: Light slate grey

#668B93 is a cyan with RGB values 102, 139, 147 and HSL 191°, 18%, 49%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Light slate grey.

Colour values

#668B93#668B93
HEX#668B93
RGBrgb(102, 139, 147)
RGB (0–1)0.4, 0.5451, 0.5765
RGB percentages40%, 54.5%, 57.6%
HSLhsl(190.7, 18.1%, 48.8%)
HSV / HSBhsv(190.7, 30.6%, 57.6%)
CMYK30.6%, 5.4%, 0%, 42.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,720,403
CSS custom property--colour: #668B93;

Brightness & contrast

Relative luminance0.23397WCAG 2.x, 0 is black and 1 is white
Perceived brightness130.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.68:1
Contrast with white3.7:1WCAG normal text: Fail
Contrast with black5.68:1WCAG normal text: AA
Greyscale equivalent#848484
Inverted#99746C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#848894no red cones; affects about 1% of men; ΔE 12 from the original
Deuteranopia#7D8293no green cones; the most common form, about 1% of men; ΔE 12.7 from the original
Tritanopia#578F8Dno blue cones; rare, and affects men and women equally; ΔE 8.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.7:1WCAG large text: AA
Contrast with black, large text5.68:1WCAG large text: AAA

Named colours

Light slate grey · ΔE 9Slate grey · ΔE 9.3Cadetblue · ΔE 10.6Gray · ΔE 13.8Dim grey · ΔE 17.6Dark grey · ΔE 19.4
Nearest named CSS colourLight slate grey (#778899)ΔE 8.99, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#936E66
Analogous#669385, #667493
Triadic#93668B, #8B9366
Split complementary#936674, #938566
Tetradic#856693, #936E66, #749366

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DDE6E8
Lighter +30%#BFCFD3
Lighter +20%#A1B9BE
Lighter +10%#83A2A9
Darker −10%#516F75
Darker −20%#3C5257
Darker −30%#273639
Darker −40%#12191B
More saturated +25%#479FB2
Less saturated −25%#7D7D7D

Channel breakdown

R102
G139
B147
Red102 (40%)
Green139 (54.5%)
Blue147 (57.6%)
Hue190.67°
Saturation (HSL)18.07%
Lightness48.82%
Dominant channelBlue
Hex per channelR 66 · G 8B · B 93

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Every value on this page was computed from “668b93” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.