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Recognised as Colour

#518AA8

  • #518AA8
  • Blue
  • Dark
  • Nearest: Steel blue

#518AA8 is a blue with RGB values 81, 138, 168 and HSL 201°, 35%, 49%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#518AA8#518AA8
HEX#518AA8
RGBrgb(81, 138, 168)
RGB (0–1)0.3176, 0.5412, 0.6588
RGB percentages31.8%, 54.1%, 65.9%
HSLhsl(200.7, 34.9%, 48.8%)
HSV / HSBhsv(200.7, 51.8%, 65.9%)
CMYK51.8%, 17.9%, 0%, 34.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,343,912
CSS custom property--colour: #518AA8;

Brightness & contrast

Relative luminance0.22753WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.55:1
Contrast with white3.78:1WCAG normal text: Fail
Contrast with black5.55:1WCAG normal text: AA
Greyscale equivalent#808080
Inverted#AE7557

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7C88AAno red cones; affects about 1% of men; ΔE 14 from the original
Deuteranopia#6F7FA8no green cones; the most common form, about 1% of men; ΔE 14.6 from the original
Tritanopia#1F9294no blue cones; rare, and affects men and women equally; ΔE 22.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.78:1WCAG large text: AA
Contrast with black, large text5.55:1WCAG large text: AAA

Named colours

Steel blue · ΔE 12.4Light slate grey · ΔE 13.2Slate grey · ΔE 13.8Cadetblue · ΔE 18.3Teal · ΔE 23.8Gray · ΔE 23.9
Nearest named CSS colourSteel blue (#4682B4)ΔE 12.4, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A86F51
Analogous#51A89B, #515EA8
Triadic#A8518A, #8AA851
Split complementary#A8515E, #A89B51
Tetradic#9B51A8, #A86F51, #5EA851

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9E6EC
Lighter +30%#B6CFDC
Lighter +20%#94B8CB
Lighter +10%#71A1BB
Darker −10%#406E86
Darker −20%#305163
Darker −30%#1F3541
Darker −40%#0F191E
More saturated +25%#3294C7
Less saturated −25%#708089

Channel breakdown

R81
G138
B168
Red81 (31.8%)
Green138 (54.1%)
Blue168 (65.9%)
Hue200.69°
Saturation (HSL)34.94%
Lightness48.82%
Dominant channelBlue
Hex per channelR 51 · G 8A · B A8

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Every value on this page was computed from “518aa8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.