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Colour

#669ACB

  • #669ACB
  • Blue
  • Dark
  • Nearest: Steel blue

#669ACB is a blue with RGB values 102, 154, 203 and HSL 209°, 49%, 60%. It is a dark colour, so black text on it reaches 7:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#669ACB#669ACB
HEX#669ACB
RGBrgb(102, 154, 203)
RGB (0–1)0.4, 0.6039, 0.7961
RGB percentages40%, 60.4%, 79.6%
HSLhsl(209.1, 49.3%, 59.8%)
HSV / HSBhsv(209.1, 49.8%, 79.6%)
CMYK49.8%, 24.1%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,724,299
CSS custom property--colour: #669ACB;

Brightness & contrast

Relative luminance0.30248WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.05:1
Contrast with white2.98:1WCAG normal text: Fail
Contrast with black7.05:1WCAG normal text: AAA
Greyscale equivalent#929292
Inverted#996534

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#869BCDno red cones; affects about 1% of men; ΔE 9 from the original
Deuteranopia#7991CAno green cones; the most common form, about 1% of men; ΔE 9.9 from the original
Tritanopia#35A5ABno blue cones; rare, and affects men and women equally; ΔE 31 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.98:1WCAG large text: Fail
Contrast with black, large text7.05:1WCAG large text: AAA

Named colours

Steel blue · ΔE 9.6Light skyblue · ΔE 19.3Light slate grey · ΔE 20.3Deep skyblue · ΔE 21.3Slate grey · ΔE 21.9Sky blue · ΔE 22.6
Nearest named CSS colourSteel blue (#4682B4)ΔE 9.56, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB9766
Analogous#66CBC9, #6668CB
Triadic#CB669A, #9ACB66
Split complementary#CB6668, #CBC966
Tetradic#C966CB, #CB9766, #68CB66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FEFFFF
Lighter +30%#D8E5F2
Lighter +20%#B2CCE5
Lighter +10%#8CB3D8
Darker −10%#4081BE
Darker −20%#336798
Darker −30%#274D71
Darker −40%#1A334B
More saturated +25%#4C9BE5
Less saturated −25%#8099B1

Channel breakdown

R102
G154
B203
Red102 (40%)
Green154 (60.4%)
Blue203 (79.6%)
Hue209.11°
Saturation (HSL)49.27%
Lightness59.8%
Dominant channelBlue
Hex per channelR 66 · G 9A · B CB

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Every value on this page was computed from “669acb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.