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Recognised as Colour

#0556CB

  • #0556CB
  • Blue
  • Dark
  • Nearest: Royal blue

#0556CB is a blue with RGB values 5, 86, 203 and HSL 215°, 95%, 41%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#0556CB#0556CB
HEX#0556CB
RGBrgb(5, 86, 203)
RGB (0–1)0.0196, 0.3373, 0.7961
RGB percentages2%, 33.7%, 79.6%
HSLhsl(215.5, 95.2%, 40.8%)
HSV / HSBhsv(215.5, 97.5%, 79.6%)
CMYK97.5%, 57.6%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer349,899
CSS custom property--colour: #0556CB;

Brightness & contrast

Relative luminance0.11WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.56:1
Contrast with white6.56:1WCAG normal text: AA
Contrast with black3.2:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#FAA934

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0066CFno red cones; affects about 1% of men; ΔE 11.5 from the original
Deuteranopia#0055C9no green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#007488no blue cones; rare, and affects men and women equally; ΔE 65.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.56:1WCAG large text: AAA
Contrast with black, large text3.2:1WCAG large text: AA

Named colours

Royal blue · ΔE 8.3Slate blue · ΔE 14.6Medium slateblue · ΔE 20Medium purple · ΔE 25Dodgerblue · ΔE 25.4Dark slateblue · ΔE 25.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 8.34, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB7A05
Analogous#05B9CB, #1705CB
Triadic#CB0556, #56CB05
Split complementary#CB1705, #B9CB05
Tetradic#CB05B9, #CB7A05, #05CB17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9FC6FD
Lighter +30%#6EA8FB
Lighter +20%#3C8AFA
Lighter +10%#0A6CF9
Darker −10%#044199
Darker −20%#032C67
Darker −30%#011736
Darker −40%#000204
More saturated +25%#0055D0
Less saturated −25%#1F5BB1

Channel breakdown

R5
G86
B203
Red5 (2%)
Green86 (33.7%)
Blue203 (79.6%)
Hue215.45°
Saturation (HSL)95.19%
Lightness40.78%
Dominant channelBlue
Hex per channelR 05 · G 56 · B CB

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Every value on this page was computed from “0556cb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.