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Colour

#55639C

  • #55639C
  • Blue
  • Dark
  • Nearest: Steel blue

#55639C is a blue with RGB values 85, 99, 156 and HSL 228°, 29%, 47%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#55639C#55639C
HEX#55639C
RGBrgb(85, 99, 156)
RGB (0–1)0.3333, 0.3882, 0.6118
RGB percentages33.3%, 38.8%, 61.2%
HSLhsl(228.2, 29.5%, 47.3%)
HSV / HSBhsv(228.2, 45.5%, 61.2%)
CMYK45.5%, 36.5%, 0%, 38.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,596,060
CSS custom property--colour: #55639C;

Brightness & contrast

Relative luminance0.13255WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.75:1
Contrast with white5.75:1WCAG normal text: AA
Contrast with black3.65:1WCAG normal text: Fail
Greyscale equivalent#646464
Inverted#AA9C63

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4E699Eno red cones; affects about 1% of men; ΔE 5.2 from the original
Deuteranopia#48639Bno green cones; the most common form, about 1% of men; ΔE 3.8 from the original
Tritanopia#3C6F78no blue cones; rare, and affects men and women equally; ΔE 33.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.75:1WCAG large text: AAA
Contrast with black, large text3.65:1WCAG large text: AA

Named colours

Steel blue · ΔE 17.2Dark slateblue · ΔE 22Cornflower blue · ΔE 25.1Slate grey · ΔE 27.2Light slate grey · ΔE 28.1Medium purple · ΔE 33.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 17.24, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9C8E55
Analogous#55879C, #6A559C
Triadic#9C5563, #639C55
Split complementary#9C6A55, #879C55
Tetradic#9C5587, #9C8E55, #559C6A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D5D9E8
Lighter +30%#B4BBD6
Lighter +20%#939DC4
Lighter +10%#727FB2
Darker −10%#434E7B
Darker −20%#31395A
Darker −30%#1F2439
Darker −40%#0D0F18
More saturated +25%#3751BA
Less saturated −25%#73757E

Channel breakdown

R85
G99
B156
Red85 (33.3%)
Green99 (38.8%)
Blue156 (61.2%)
Hue228.17°
Saturation (HSL)29.46%
Lightness47.25%
Dominant channelBlue
Hex per channelR 55 · G 63 · B 9C

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Every value on this page was computed from “55639c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.