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Colour

#6689CC

  • #6689CC
  • Blue
  • Dark
  • Nearest: Cornflower blue

#6689CC is a blue with RGB values 102, 137, 204 and HSL 219°, 50%, 60%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#6689CC#6689CC
HEX#6689CC
RGBrgb(102, 137, 204)
RGB (0–1)0.4, 0.5373, 0.8
RGB percentages40%, 53.7%, 80%
HSLhsl(219.4, 50%, 60%)
HSV / HSBhsv(219.4, 50%, 80%)
CMYK50%, 32.8%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,719,948
CSS custom property--colour: #6689CC;

Brightness & contrast

Relative luminance0.25076WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.02:1
Contrast with white3.49:1WCAG normal text: Fail
Contrast with black6.02:1WCAG normal text: AA
Greyscale equivalent#868686
Inverted#997633

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6F8ECFno red cones; affects about 1% of men; ΔE 2.6 from the original
Deuteranopia#6485CBno green cones; the most common form, about 1% of men; ΔE 2.5 from the original
Tritanopia#3897A1no blue cones; rare, and affects men and women equally; ΔE 39.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.49:1WCAG large text: AA
Contrast with black, large text6.02:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 12.2Steel blue · ΔE 13.1Dodgerblue · ΔE 25.3Light slate grey · ΔE 28.7Deep skyblue · ΔE 28.9Slate grey · ΔE 29.5
Nearest named CSS colourCornflower blue (#6495ED)ΔE 12.23, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CCA966
Analogous#66BCCC, #7666CC
Triadic#CC6689, #89CC66
Split complementary#CC7666, #BCCC66
Tetradic#CC66BC, #CCA966, #66CC76

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9E1F2
Lighter +20%#B3C4E6
Lighter +10%#8CA6D9
Darker −10%#406BBF
Darker −20%#335699
Darker −30%#264073
Darker −40%#1A2B4D
More saturated +25%#4D81E6
Less saturated −25%#8091B3

Channel breakdown

R102
G137
B204
Red102 (40%)
Green137 (53.7%)
Blue204 (80%)
Hue219.41°
Saturation (HSL)50%
Lightness60%
Dominant channelBlue
Hex per channelR 66 · G 89 · B CC

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Every value on this page was computed from “6689cc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.