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Recognised as Colour

#A9B9DB

  • #A9B9DB
  • Blue
  • Dark
  • Nearest: Light steelblue

#A9B9DB is a blue with RGB values 169, 185, 219 and HSL 221°, 41%, 76%. It is a dark colour, so black text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Light steelblue.

Colour values

#A9B9DB#A9B9DB
HEX#A9B9DB
RGBrgb(169, 185, 219)
RGB (0–1)0.6627, 0.7255, 0.8588
RGB percentages66.3%, 72.5%, 85.9%
HSLhsl(220.8, 41%, 76.1%)
HSV / HSBhsv(220.8, 22.8%, 85.9%)
CMYK22.8%, 15.5%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,123,163
CSS custom property--colour: #A9B9DB;

Brightness & contrast

Relative luminance0.48247WCAG 2.x, 0 is black and 1 is white
Perceived brightness184.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.65:1
Contrast with white1.97:1WCAG normal text: Fail
Contrast with black10.65:1WCAG normal text: AAA
Greyscale equivalent#B8B8B8
Inverted#564624

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AEBBDDno red cones; affects about 1% of men; ΔE 1.4 from the original
Deuteranopia#AAB7DAno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#9CC0C4no blue cones; rare, and affects men and women equally; ΔE 18.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.97:1WCAG large text: Fail
Contrast with black, large text10.65:1WCAG large text: AAA

Named colours

Light steelblue · ΔE 5.9Thistle · ΔE 15.8Light skyblue · ΔE 16.6Light blue · ΔE 17.1Sky blue · ΔE 17.3Silver · ΔE 19.2
Nearest named CSS colourLight steelblue (#B0C4DE)ΔE 5.92, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DBCBA9
Analogous#A9D2DB, #B2A9DB
Triadic#DBA9B9, #B9DBA9
Split complementary#DBB2A9, #D2DBA9
Tetradic#DBA9D2, #DBCBA9, #A9DBB2

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#F1F4F9
Lighter +10%#CDD6EA
Darker −10%#859CCC
Darker −20%#617EBD
Darker −30%#4564A6
Darker −40%#364E82
More saturated +25%#9AB4EA
Less saturated −25%#B8BECC

Channel breakdown

R169
G185
B219
Red169 (66.3%)
Green185 (72.5%)
Blue219 (85.9%)
Hue220.8°
Saturation (HSL)40.98%
Lightness76.08%
Dominant channelBlue
Hex per channelR A9 · G B9 · B DB

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Every value on this page was computed from “a9b9db” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.