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Recognised as Colour

#A4ACBC

  • #A4ACBC
  • Blue
  • Dark
  • Nearest: Dark grey

#A4ACBC is a blue with RGB values 164, 172, 188 and HSL 220°, 15%, 69%. It is a dark colour, so black text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark grey.

Colour values

#A4ACBC#A4ACBC
HEX#A4ACBC
RGBrgb(164, 172, 188)
RGB (0–1)0.6431, 0.6745, 0.7373
RGB percentages64.3%, 67.5%, 73.7%
HSLhsl(220, 15.2%, 69%)
HSV / HSBhsv(220, 12.8%, 73.7%)
CMYK12.8%, 8.5%, 0%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,792,124
CSS custom property--colour: #A4ACBC;

Brightness & contrast

Relative luminance0.41028WCAG 2.x, 0 is black and 1 is white
Perceived brightness171.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.21:1
Contrast with white2.28:1WCAG normal text: Fail
Contrast with black9.21:1WCAG normal text: AAA
Greyscale equivalent#ABABAB
Inverted#5B5343

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A7ADBDno red cones; affects about 1% of men; ΔE 0.9 from the original
Deuteranopia#A5ABBCno green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#9FAFB1no blue cones; rare, and affects men and women equally; ΔE 8.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.28:1WCAG large text: Fail
Contrast with black, large text9.21:1WCAG large text: AAA

Named colours

Dark grey · ΔE 9.2Light steelblue · ΔE 10.4Silver · ΔE 11.8Light slate grey · ΔE 14.7Thistle · ΔE 16.1Light grey · ΔE 17
Nearest named CSS colourDark grey (#A9A9A9)ΔE 9.19, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BCB4A4
Analogous#A4B8BC, #A8A4BC
Triadic#BCA4AC, #ACBCA4
Split complementary#BCA8A4, #B8BCA4
Tetradic#BCA4B8, #BCB4A4, #A4BCA8

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FCFCFD
Lighter +20%#DFE2E7
Lighter +10%#C1C7D2
Darker −10%#8791A6
Darker −20%#6A7790
Darker −30%#545E73
Darker −40%#3F4655
More saturated +25%#90A5D0
Less saturated −25%#B0B0B0

Channel breakdown

R164
G172
B188
Red164 (64.3%)
Green172 (67.5%)
Blue188 (73.7%)
Hue220°
Saturation (HSL)15.19%
Lightness69.02%
Dominant channelBlue
Hex per channelR A4 · G AC · B BC

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Every value on this page was computed from “a4acbc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.