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Recognised as Colour

#055B78

  • #055B78
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#055B78 is a cyan with RGB values 5, 91, 120 and HSL 195°, 92%, 25%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#055B78#055B78
HEX#055B78
RGBrgb(5, 91, 120)
RGB (0–1)0.0196, 0.3569, 0.4706
RGB percentages2%, 35.7%, 47.1%
HSLhsl(195.1, 92%, 24.5%)
HSV / HSBhsv(195.1, 95.8%, 47.1%)
CMYK95.8%, 24.2%, 0%, 52.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer351,096
CSS custom property--colour: #055B78;

Brightness & contrast

Relative luminance0.08871WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.57:1
Contrast with white7.57:1WCAG normal text: AAA
Contrast with black2.77:1WCAG normal text: Fail
Greyscale equivalent#4B4B4B
Inverted#FAA487

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4C5A79no red cones; affects about 1% of men; ΔE 15 from the original
Deuteranopia#3E5078no green cones; the most common form, about 1% of men; ΔE 16.6 from the original
Tritanopia#006365no blue cones; rare, and affects men and women equally; ΔE 18.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.57:1WCAG large text: AAA
Contrast with black, large text2.77:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 19.6Steel blue · ΔE 20.6Slate grey · ΔE 23Light slate grey · ΔE 25.1Teal · ΔE 25.7Dim grey · ΔE 26.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.56, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#782205
Analogous#05785C, #052178
Triadic#78055B, #5B7805
Split complementary#780521, #785B05
Tetradic#5C0578, #782205, #227805

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#51CEF8
Lighter +30%#20C0F6
Lighter +20%#09A5DA
Lighter +10%#0780A9
Darker −10%#033647
Darker −20%#011116
Darker −30%#000000
Darker −40%#000000
More saturated +25%#005D7D
Less saturated −25%#155368

Channel breakdown

R5
G91
B120
Red5 (2%)
Green91 (35.7%)
Blue120 (47.1%)
Hue195.13°
Saturation (HSL)92%
Lightness24.51%
Dominant channelBlue
Hex per channelR 05 · G 5B · B 78

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Every value on this page was computed from “055b78” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.