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Recognised as Colour

#5157D0

  • #5157D0
  • Blue
  • Dark
  • Nearest: Slate blue

#5157D0 is a blue with RGB values 81, 87, 208 and HSL 237°, 57%, 57%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Slate blue.

Colour values

#5157D0#5157D0
HEX#5157D0
RGBrgb(81, 87, 208)
RGB (0–1)0.3176, 0.3412, 0.8157
RGB percentages31.8%, 34.1%, 81.6%
HSLhsl(237.2, 57.5%, 56.7%)
HSV / HSBhsv(237.2, 61.1%, 81.6%)
CMYK61.1%, 58.2%, 0%, 18.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,330,896
CSS custom property--colour: #5157D0;

Brightness & contrast

Relative luminance0.1312WCAG 2.x, 0 is black and 1 is white
Perceived brightness106.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.79:1
Contrast with white5.79:1WCAG normal text: AA
Contrast with black3.62:1WCAG normal text: Fail
Greyscale equivalent#5E5E5E
Inverted#AEA82F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006BD4no red cones; affects about 1% of men; ΔE 19.2 from the original
Deuteranopia#0060CEno green cones; the most common form, about 1% of men; ΔE 14.1 from the original
Tritanopia#00748Bno blue cones; rare, and affects men and women equally; ΔE 68.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.79:1WCAG large text: AAA
Contrast with black, large text3.62:1WCAG large text: AA

Named colours

Slate blue · ΔE 6.5Royal blue · ΔE 9.4Medium slateblue · ΔE 11.7Medium purple · ΔE 18.2Rebecca purple · ΔE 21.1Dark slateblue · ΔE 25.8
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 6.49, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D0CA51
Analogous#5197D0, #8A51D0
Triadic#D05157, #57D051
Split complementary#D08B51, #96D051
Tetradic#D05197, #D0CA51, #51D08B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F2F2FB
Lighter +30%#C9CBF1
Lighter +20%#A1A5E6
Lighter +10%#797EDB
Darker −10%#3339BB
Darker −20%#282D93
Darker −30%#1D216B
Darker −40%#121443
More saturated +25%#353EEC
Less saturated −25%#6D70B4

Channel breakdown

R81
G87
B208
Red81 (31.8%)
Green87 (34.1%)
Blue208 (81.6%)
Hue237.17°
Saturation (HSL)57.47%
Lightness56.67%
Dominant channelBlue
Hex per channelR 51 · G 57 · B D0

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Every value on this page was computed from “5157d0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.