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Colour

#858DA5

  • #858DA5
  • Blue
  • Dark
  • Nearest: Light slate grey

#858DA5 is a blue with RGB values 133, 141, 165 and HSL 225°, 15%, 58%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Light slate grey.

Colour values

#858DA5#858DA5
HEX#858DA5
RGBrgb(133, 141, 165)
RGB (0–1)0.5216, 0.5529, 0.6471
RGB percentages52.2%, 55.3%, 64.7%
HSLhsl(225, 15.1%, 58.4%)
HSV / HSBhsv(225, 19.4%, 64.7%)
CMYK19.4%, 14.5%, 0%, 35.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,752,549
CSS custom property--colour: #858DA5;

Brightness & contrast

Relative luminance0.26753WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.35:1
Contrast with white3.31:1WCAG normal text: Fail
Contrast with black6.35:1WCAG normal text: AA
Greyscale equivalent#8D8D8D
Inverted#7A725A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#868FA6no red cones; affects about 1% of men; ΔE 1 from the original
Deuteranopia#848CA4no green cones; the most common form, about 1% of men; ΔE 0.4 from the original
Tritanopia#7D9195no blue cones; rare, and affects men and women equally; ΔE 12.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.31:1WCAG large text: AA
Contrast with black, large text6.35:1WCAG large text: AAA

Named colours

Light slate grey · ΔE 6Slate grey · ΔE 8Gray · ΔE 14.8Dark grey · ΔE 17.4Dim grey · ΔE 19.9Light steelblue · ΔE 20.1
Nearest named CSS colourLight slate grey (#778899)ΔE 5.96, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A59D85
Analogous#859DA5, #8D85A5
Triadic#A5858D, #8DA585
Split complementary#A58D85, #9DA585
Tetradic#A5859D, #A59D85, #85A58D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FAFBFC
Lighter +30%#DDDFE6
Lighter +20%#C0C4D0
Lighter +10%#A2A8BB
Darker −10%#69728E
Darker −20%#535B71
Darker −30%#3E4353
Darker −40%#282B36
More saturated +25%#6B80C0
Less saturated −25%#959595

Channel breakdown

R133
G141
B165
Red133 (52.2%)
Green141 (55.3%)
Blue165 (64.7%)
Hue225°
Saturation (HSL)15.09%
Lightness58.43%
Dominant channelBlue
Hex per channelR 85 · G 8D · B A5

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Every value on this page was computed from “858da5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.