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Recognised as Colour

#51698C

  • #51698C
  • Blue
  • Dark
  • Nearest: Steel blue

#51698C is a blue with RGB values 81, 105, 140 and HSL 216°, 27%, 43%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#51698C#51698C
HEX#51698C
RGBrgb(81, 105, 140)
RGB (0–1)0.3176, 0.4118, 0.549
RGB percentages31.8%, 41.2%, 54.9%
HSLhsl(215.6, 26.7%, 43.3%)
HSV / HSBhsv(215.6, 42.1%, 54.9%)
CMYK42.1%, 25%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,335,436
CSS custom property--colour: #51698C;

Brightness & contrast

Relative luminance0.13746WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.6:1
Contrast with white5.6:1WCAG normal text: AA
Contrast with black3.75:1WCAG normal text: Fail
Greyscale equivalent#666666
Inverted#AE9673

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5C6B8Eno red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#56658Bno green cones; the most common form, about 1% of men; ΔE 3.8 from the original
Tritanopia#3C7175no blue cones; rare, and affects men and women equally; ΔE 22.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.6:1WCAG large text: AAA
Contrast with black, large text3.75:1WCAG large text: AA

Named colours

Steel blue · ΔE 14.1Slate grey · ΔE 14.9Light slate grey · ΔE 16.6Dim grey · ΔE 22.1Gray · ΔE 24.1Dark slate grey · ΔE 25.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 14.13, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8C7451
Analogous#51868C, #57518C
Triadic#8C5169, #698C51
Split complementary#8C5751, #868C51
Tetradic#8C5186, #8C7451, #518C57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C9D2E0
Lighter +30%#A9B8CD
Lighter +20%#899DBA
Lighter +10%#6882A8
Darker −10%#3E516C
Darker −20%#2C394B
Darker −30%#19202B
Darker −40%#06080B
More saturated +25%#3564A8
Less saturated −25%#6D6E70

Channel breakdown

R81
G105
B140
Red81 (31.8%)
Green105 (41.2%)
Blue140 (54.9%)
Hue215.59°
Saturation (HSL)26.7%
Lightness43.33%
Dominant channelBlue
Hex per channelR 51 · G 69 · B 8C

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Every value on this page was computed from “51698c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.