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Colour

#66899C

  • #66899C
  • Blue
  • Dark
  • Nearest: Light slate grey

#66899C is a blue with RGB values 102, 137, 156 and HSL 201°, 21%, 51%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Light slate grey.

Colour values

#66899C#66899C
HEX#66899C
RGBrgb(102, 137, 156)
RGB (0–1)0.4, 0.5373, 0.6118
RGB percentages40%, 53.7%, 61.2%
HSLhsl(201.1, 21.4%, 50.6%)
HSV / HSBhsv(201.1, 34.6%, 61.2%)
CMYK34.6%, 12.2%, 0%, 38.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,719,900
CSS custom property--colour: #66899C;

Brightness & contrast

Relative luminance0.23116WCAG 2.x, 0 is black and 1 is white
Perceived brightness130 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.62:1
Contrast with white3.73:1WCAG normal text: Fail
Contrast with black5.62:1WCAG normal text: AA
Greyscale equivalent#838383
Inverted#997663

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#80889Dno red cones; affects about 1% of men; ΔE 9.4 from the original
Deuteranopia#78819Cno green cones; the most common form, about 1% of men; ΔE 10.4 from the original
Tritanopia#548E8Fno blue cones; rare, and affects men and women equally; ΔE 13.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.73:1WCAG large text: AA
Contrast with black, large text5.62:1WCAG large text: AAA

Named colours

Light slate grey · ΔE 6Slate grey · ΔE 6.7Cadetblue · ΔE 15.2Gray · ΔE 15.9Steel blue · ΔE 18.6Dim grey · ΔE 19.2
Nearest named CSS colourLight slate grey (#778899)ΔE 5.95, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9C7966
Analogous#669C94, #666E9C
Triadic#9C6689, #899C66
Split complementary#9C666E, #9C9466
Tetradic#94669C, #9C7966, #6E9C66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E2E9EC
Lighter +30%#C3D1D8
Lighter +20%#A4B9C4
Lighter +10%#85A1B0
Darker −10%#516E7E
Darker −20%#3D535F
Darker −30%#293840
Darker −40%#151D21
More saturated +25%#4692BC
Less saturated −25%#818181

Channel breakdown

R102
G137
B156
Red102 (40%)
Green137 (53.7%)
Blue156 (61.2%)
Hue201.11°
Saturation (HSL)21.43%
Lightness50.59%
Dominant channelBlue
Hex per channelR 66 · G 89 · B 9C

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Every value on this page was computed from “66899c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.