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Recognised as Colour

#515AAF

  • #515AAF
  • Blue
  • Dark
  • Nearest: Dark slateblue

#515AAF is a blue with RGB values 81, 90, 175 and HSL 234°, 37%, 50%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#515AAF#515AAF
HEX#515AAF
RGBrgb(81, 90, 175)
RGB (0–1)0.3176, 0.3529, 0.6863
RGB percentages31.8%, 35.3%, 68.6%
HSLhsl(234.3, 37%, 50.2%)
HSV / HSBhsv(234.3, 53.7%, 68.6%)
CMYK53.7%, 48.6%, 0%, 31.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,331,631
CSS custom property--colour: #515AAF;

Brightness & contrast

Relative luminance0.12157WCAG 2.x, 0 is black and 1 is white
Perceived brightness101 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.12:1
Contrast with white6.12:1WCAG normal text: AA
Contrast with black3.43:1WCAG normal text: Fail
Greyscale equivalent#5E5E5E
Inverted#AEA550

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3266B2no red cones; affects about 1% of men; ΔE 12.6 from the original
Deuteranopia#275EADno green cones; the most common form, about 1% of men; ΔE 10.7 from the original
Tritanopia#256D7Cno blue cones; rare, and affects men and women equally; ΔE 49.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.12:1WCAG large text: AAA
Contrast with black, large text3.43:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 12.5Slate blue · ΔE 18.9Royal blue · ΔE 20.3Medium purple · ΔE 20.9Rebecca purple · ΔE 23.3Cornflower blue · ΔE 23.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.54, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AFA651
Analogous#5189AF, #7751AF
Triadic#AF515A, #5AAF51
Split complementary#AF7751, #89AF51
Tetradic#AF5189, #AFA651, #51AF77

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DDDFEF
Lighter +30%#BABDDF
Lighter +20%#979CCF
Lighter +10%#747BBF
Darker −10%#41488C
Darker −20%#313669
Darker −30%#202447
Darker −40%#101224
More saturated +25%#3140CF
Less saturated −25%#71748F

Channel breakdown

R81
G90
B175
Red81 (31.8%)
Green90 (35.3%)
Blue175 (68.6%)
Hue234.26°
Saturation (HSL)37.01%
Lightness50.2%
Dominant channelBlue
Hex per channelR 51 · G 5A · B AF

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Every value on this page was computed from “515aaf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.