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Colour

#669BCC

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

#669BCC is a blue with RGB values 102, 155, 204 and HSL 209°, 50%, 60%. It is a dark colour, so black text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#669BCC#669BCC
HEX#669BCC
RGBrgb(102, 155, 204)
RGB (0–1)0.4, 0.6078, 0.8
RGB percentages40%, 60.8%, 80%
HSLhsl(208.8, 50%, 60%)
HSV / HSBhsv(208.8, 50%, 80%)
CMYK50%, 24%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,724,556
CSS custom property--colour: #669BCC;

Brightness & contrast

Relative luminance0.30627WCAG 2.x, 0 is black and 1 is white
Perceived brightness148.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.13:1
Contrast with white2.95:1WCAG normal text: Fail
Contrast with black7.13:1WCAG normal text: AAA
Greyscale equivalent#939393
Inverted#996433

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#879CCEno red cones; affects about 1% of men; ΔE 9.2 from the original
Deuteranopia#7A92CBno green cones; the most common form, about 1% of men; ΔE 10.1 from the original
Tritanopia#33A6ACno blue cones; rare, and affects men and women equally; ΔE 31.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.95:1WCAG large text: Fail
Contrast with black, large text7.13:1WCAG large text: AAA

Named colours

Steel blue · ΔE 9.9Light skyblue · ΔE 18.9Light slate grey · ΔE 20.5Deep skyblue · ΔE 20.9Slate grey · ΔE 22.1Sky blue · ΔE 22.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 9.86, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CC9766
Analogous#66CCCA, #6668CC
Triadic#CC669B, #9BCC66
Split complementary#CC6668, #CCCA66
Tetradic#CA66CC, #CC9766, #68CC66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9E6F2
Lighter +20%#B3CDE6
Lighter +10%#8CB4D9
Darker −10%#4082BF
Darker −20%#336899
Darker −30%#264E73
Darker −40%#1A344D
More saturated +25%#4D9CE6
Less saturated −25%#809AB3

Channel breakdown

R102
G155
B204
Red102 (40%)
Green155 (60.8%)
Blue204 (80%)
Hue208.82°
Saturation (HSL)50%
Lightness60%
Dominant channelBlue
Hex per channelR 66 · G 9B · B CC

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