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Colour

#685AB2

  • #685AB2
  • Blue
  • Dark
  • Nearest: Dark slateblue

#685AB2 is a blue with RGB values 104, 90, 178 and HSL 250°, 36%, 53%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#685AB2#685AB2
HEX#685AB2
RGBrgb(104, 90, 178)
RGB (0–1)0.4078, 0.3529, 0.698
RGB percentages40.8%, 35.3%, 69.8%
HSLhsl(249.5, 36.4%, 52.5%)
HSV / HSBhsv(249.5, 49.4%, 69.8%)
CMYK41.6%, 49.4%, 0%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,838,962
CSS custom property--colour: #685AB2;

Brightness & contrast

Relative luminance0.1347WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.68:1
Contrast with white5.68:1WCAG normal text: AA
Contrast with black3.69:1WCAG normal text: Fail
Greyscale equivalent#636363
Inverted#97A54D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3669B5no red cones; affects about 1% of men; ΔE 19 from the original
Deuteranopia#3664B0no green cones; the most common form, about 1% of men; ΔE 17.6 from the original
Tritanopia#536C7Dno blue cones; rare, and affects men and women equally; ΔE 46 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.68:1WCAG large text: AAA
Contrast with black, large text3.69:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 13.1Slate blue · ΔE 15.3Medium purple · ΔE 15.6Rebecca purple · ΔE 18.7Royal blue · ΔE 20.7Medium slateblue · ΔE 25.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.08, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A4B25A
Analogous#5A78B2, #945AB2
Triadic#B2685A, #5AB268
Split complementary#B2945A, #78B25A
Tetradic#B25A78, #A4B25A, #5AB294

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E7E5F3
Lighter +30%#C7C2E3
Lighter +20%#A8A0D2
Lighter +10%#887DC2
Darker −10%#524594
Darker −20%#3E3571
Darker −30%#2B254E
Darker −40%#18142C
More saturated +25%#533CD0
Less saturated −25%#7D7894

Channel breakdown

R104
G90
B178
Red104 (40.8%)
Green90 (35.3%)
Blue178 (69.8%)
Hue249.55°
Saturation (HSL)36.36%
Lightness52.55%
Dominant channelBlue
Hex per channelR 68 · G 5A · B B2

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Every value on this page was computed from “685ab2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.