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Recognised as Colour

#013355

  • #013355
  • Blue
  • Dark
  • Nearest: Dark slate grey

#013355 is a blue with RGB values 1, 51, 85 and HSL 204°, 98%, 17%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#013355#013355
HEX#013355
RGBrgb(1, 51, 85)
RGB (0–1)0.0039, 0.2, 0.3333
RGB percentages0.4%, 20%, 33.3%
HSLhsl(204.3, 97.7%, 16.9%)
HSV / HSBhsv(204.3, 98.8%, 33.3%)
CMYK98.8%, 40%, 0%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer78,677
CSS custom property--colour: #013355;

Brightness & contrast

Relative luminance0.0303WCAG 2.x, 0 is black and 1 is white
Perceived brightness48.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.08:1
Contrast with white13.08:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#2B2B2B
Inverted#FECCAA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#223556no red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#162D54no green cones; the most common form, about 1% of men; ΔE 7 from the original
Tritanopia#003B40no blue cones; rare, and affects men and women equally; ΔE 22.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.08:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 26.3Black · ΔE 32Steel blue · ΔE 33.3Dark slateblue · ΔE 33.6Dim grey · ΔE 34.7Slate grey · ΔE 35.7
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 26.25, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#552301
Analogous#01554D, #010955
Triadic#550133, #335501
Split complementary#550109, #554D01
Tetradic#4D0155, #552301, #095501

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#26A5FC
Lighter +30%#038EEC
Lighter +20%#026FBA
Lighter +10%#025187
Darker −10%#001523
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003356
Less saturated −25%#0C314A

Channel breakdown

R1
G51
B85
Red1 (0.4%)
Green51 (20%)
Blue85 (33.3%)
Hue204.29°
Saturation (HSL)97.67%
Lightness16.86%
Dominant channelBlue
Hex per channelR 01 · G 33 · B 55

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Every value on this page was computed from “hex 013355” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.