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Recognised as Colour

#517C9A

  • #517C9A
  • Blue
  • Dark
  • Nearest: Slate grey

#517C9A is a blue with RGB values 81, 124, 154 and HSL 205°, 31%, 46%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#517C9A#517C9A
HEX#517C9A
RGBrgb(81, 124, 154)
RGB (0–1)0.3176, 0.4863, 0.6039
RGB percentages31.8%, 48.6%, 60.4%
HSLhsl(204.7, 31.1%, 46.1%)
HSV / HSBhsv(204.7, 47.4%, 60.4%)
CMYK47.4%, 19.5%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,340,314
CSS custom property--colour: #517C9A;

Brightness & contrast

Relative luminance0.18498WCAG 2.x, 0 is black and 1 is white
Perceived brightness117 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.7:1
Contrast with white4.47:1WCAG normal text: Fail
Contrast with black4.7:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#AE8365

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6F7C9Bno red cones; affects about 1% of men; ΔE 9.5 from the original
Deuteranopia#657499no green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#308486no blue cones; rare, and affects men and women equally; ΔE 21.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.47:1WCAG large text: AA
Contrast with black, large text4.7:1WCAG large text: AAA

Named colours

Slate grey · ΔE 11.4Steel blue · ΔE 11.9Light slate grey · ΔE 12Cadetblue · ΔE 21.9Gray · ΔE 22Dim grey · ΔE 22.4
Nearest named CSS colourSlate grey (#708090)ΔE 11.35, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9A6F51
Analogous#519A93, #51589A
Triadic#9A517C, #7C9A51
Split complementary#9A5158, #9A9351
Tetradic#93519A, #9A6F51, #589A51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D0DDE7
Lighter +30%#AFC5D5
Lighter +20%#8EADC3
Lighter +10%#6C95B2
Darker −10%#3F6179
Darker −20%#2E4657
Darker −30%#1C2B36
Darker −40%#0B1014
More saturated +25%#3481B7
Less saturated −25%#6E777D

Channel breakdown

R81
G124
B154
Red81 (31.8%)
Green124 (48.6%)
Blue154 (60.4%)
Hue204.66°
Saturation (HSL)31.06%
Lightness46.08%
Dominant channelBlue
Hex per channelR 51 · G 7C · B 9A

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Every value on this page was computed from “517c9a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.