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Colour

#665F91

  • #665F91
  • Blue
  • Dark
  • Nearest: Steel blue

#665F91 is a blue with RGB values 102, 95, 145 and HSL 248°, 21%, 47%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#665F91#665F91
HEX#665F91
RGBrgb(102, 95, 145)
RGB (0–1)0.4, 0.3725, 0.5686
RGB percentages40%, 37.3%, 56.9%
HSLhsl(248.4, 20.8%, 47.1%)
HSV / HSBhsv(248.4, 34.5%, 56.9%)
CMYK29.7%, 34.5%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,709,137
CSS custom property--colour: #665F91;

Brightness & contrast

Relative luminance0.13054WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.82:1
Contrast with white5.82:1WCAG normal text: AA
Contrast with black3.61:1WCAG normal text: Fail
Greyscale equivalent#646464
Inverted#99A06E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#516693no red cones; affects about 1% of men; ΔE 10 from the original
Deuteranopia#516490no green cones; the most common form, about 1% of men; ΔE 9.6 from the original
Tritanopia#5C6871no blue cones; rare, and affects men and women equally; ΔE 26.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.82:1WCAG large text: AAA
Contrast with black, large text3.61:1WCAG large text: AA

Named colours

Steel blue · ΔE 21.8Dark slateblue · ΔE 22.7Slate grey · ΔE 25.2Light slate grey · ΔE 26.3Cornflower blue · ΔE 30.2Dim grey · ΔE 30.3
Nearest named CSS colourSteel blue (#4682B4)ΔE 21.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A915F
Analogous#5F7191, #7F5F91
Triadic#91665F, #5F9166
Split complementary#917F5F, #71915F
Tetradic#915F71, #8A915F, #5F917F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9D7E5
Lighter +30%#BCB8D1
Lighter +20%#9E9ABD
Lighter +10%#817BA8
Darker −10%#504B72
Darker −20%#3B3753
Darker −30%#252235
Darker −40%#0F0E16
More saturated +25%#5041AF
Less saturated −25%#787878

Channel breakdown

R102
G95
B145
Red102 (40%)
Green95 (37.3%)
Blue145 (56.9%)
Hue248.4°
Saturation (HSL)20.83%
Lightness47.06%
Dominant channelBlue
Hex per channelR 66 · G 5F · B 91

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Every value on this page was computed from “665f91” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.