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Recognised as Colour

#556FA7

  • #556FA7
  • Blue
  • Dark
  • Nearest: Steel blue

#556FA7 is a blue with RGB values 85, 111, 167 and HSL 221°, 33%, 49%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#556FA7#556FA7
HEX#556FA7
RGBrgb(85, 111, 167)
RGB (0–1)0.3333, 0.4353, 0.6549
RGB percentages33.3%, 43.5%, 65.5%
HSLhsl(221, 32.5%, 49.4%)
HSV / HSBhsv(221, 49.1%, 65.5%)
CMYK49.1%, 33.5%, 0%, 34.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,599,143
CSS custom property--colour: #556FA7;

Brightness & contrast

Relative luminance0.1609WCAG 2.x, 0 is black and 1 is white
Perceived brightness112.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.98:1
Contrast with white4.98:1WCAG normal text: AA
Contrast with black4.22:1WCAG normal text: Fail
Greyscale equivalent#6E6E6E
Inverted#AA9058

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5A74A9no red cones; affects about 1% of men; ΔE 2.8 from the original
Deuteranopia#516CA6no green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#337B83no blue cones; rare, and affects men and women equally; ΔE 34.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.98:1WCAG large text: AAA
Contrast with black, large text4.22:1WCAG large text: AA

Named colours

Steel blue · ΔE 11.8Cornflower blue · ΔE 22.2Slate grey · ΔE 24.7Light slate grey · ΔE 25.2Dark slateblue · ΔE 27Dodgerblue · ΔE 33
Nearest named CSS colourSteel blue (#4682B4)ΔE 11.83, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A78D55
Analogous#5598A7, #6455A7
Triadic#A7556F, #6FA755
Split complementary#A76455, #98A755
Tetradic#A75598, #A78D55, #55A764

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DBE1ED
Lighter +30%#B9C4DC
Lighter +20%#98A8CA
Lighter +10%#768BB9
Darker −10%#445985
Darker −20%#334263
Darker −30%#212C42
Darker −40%#101520
More saturated +25%#3663C7
Less saturated −25%#757B88

Channel breakdown

R85
G111
B167
Red85 (33.3%)
Green111 (43.5%)
Blue167 (65.5%)
Hue220.98°
Saturation (HSL)32.54%
Lightness49.41%
Dominant channelBlue
Hex per channelR 55 · G 6F · B A7

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Every value on this page was computed from “556fa7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.