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Recognised as Colour

#A1B5E9

  • #A1B5E9
  • Blue
  • Dark
  • Nearest: Light steelblue

#A1B5E9 is a blue with RGB values 161, 181, 233 and HSL 223°, 62%, 77%. It is a dark colour, so black text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Light steelblue.

Colour values

#A1B5E9#A1B5E9
HEX#A1B5E9
RGBrgb(161, 181, 233)
RGB (0–1)0.6314, 0.7098, 0.9137
RGB percentages63.1%, 71%, 91.4%
HSLhsl(223.3, 62.1%, 77.3%)
HSV / HSBhsv(223.3, 30.9%, 91.4%)
CMYK30.9%, 22.3%, 0%, 8.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,597,865
CSS custom property--colour: #A1B5E9;

Brightness & contrast

Relative luminance0.46508WCAG 2.x, 0 is black and 1 is white
Perceived brightness182.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.3:1
Contrast with white2.04:1WCAG normal text: Fail
Contrast with black10.3:1WCAG normal text: AAA
Greyscale equivalent#B5B5B5
Inverted#5E4A16

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A4B9EBno red cones; affects about 1% of men; ΔE 1.8 from the original
Deuteranopia#9EB3E8no green cones; the most common form, about 1% of men; ΔE 1 from the original
Tritanopia#8DBFC7no blue cones; rare, and affects men and women equally; ΔE 27.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.04:1WCAG large text: Fail
Contrast with black, large text10.3:1WCAG large text: AAA

Named colours

Light steelblue · ΔE 15.1Light skyblue · ΔE 16.9Thistle · ΔE 21.6Sky blue · ΔE 21.7Steel blue · ΔE 23.6Cornflower blue · ΔE 24.6
Nearest named CSS colourLight steelblue (#B0C4DE)ΔE 15.13, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E9D5A1
Analogous#A1D9E9, #B1A1E9
Triadic#E9A1B5, #B5E9A1
Split complementary#E9B1A1, #D9E9A1
Tetradic#E9A1D9, #E9D5A1, #A1E9B1

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#F4F6FC
Lighter +10%#CAD6F3
Darker −10%#7894DF
Darker −20%#4E74D6
Darker −30%#2E57C3
Darker −40%#24459A
More saturated +25%#92AFF7
Less saturated −25%#B0BBDB

Channel breakdown

R161
G181
B233
Red161 (63.1%)
Green181 (71%)
Blue233 (91.4%)
Hue223.33°
Saturation (HSL)62.07%
Lightness77.25%
Dominant channelBlue
Hex per channelR A1 · G B5 · B E9

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Every value on this page was computed from “a1b5e9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.