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Colour

#00356A

  • #00356A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#00356A is a blue with RGB values 0, 53, 106 and HSL 210°, 100%, 21%. It is a dark colour, so white text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#00356A#00356A
HEX#00356A
RGBrgb(0, 53, 106)
RGB (0–1)0, 0.2078, 0.4157
RGB percentages0%, 20.8%, 41.6%
HSLhsl(210, 100%, 20.8%)
HSV / HSBhsv(210, 100%, 41.6%)
CMYK100%, 50%, 0%, 58.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,674
CSS custom property--colour: #00356A;

Brightness & contrast

Relative luminance0.03587WCAG 2.x, 0 is black and 1 is white
Perceived brightness54.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.23:1
Contrast with white12.23:1WCAG normal text: AAA
Contrast with black1.72:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#FFCA95

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#163A6Cno red cones; affects about 1% of men; ΔE 3.4 from the original
Deuteranopia#003169no green cones; the most common form, about 1% of men; ΔE 3.2 from the original
Tritanopia#00424Ano blue cones; rare, and affects men and women equally; ΔE 33.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.23:1WCAG large text: AAA
Contrast with black, large text1.72:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 21.8Midnight blue · ΔE 29.1Steel blue · ΔE 32.4Dark slate grey · ΔE 37.9Rebecca purple · ΔE 39.1Slate grey · ΔE 40.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 21.82, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6A3500
Analogous#006A6A, #00006A
Triadic#6A0035, #356A00
Split complementary#6A0000, #6A6A00
Tetradic#6A006A, #6A3500, #006A00

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#379BFF
Lighter +30%#0482FF
Lighter +20%#0068D0
Lighter +10%#004F9D
Darker −10%#001C37
Darker −20%#000204
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00356A
Less saturated −25%#0D355D

Channel breakdown

R0
G53
B106
Red0 (0%)
Green53 (20.8%)
Blue106 (41.6%)
Hue210°
Saturation (HSL)100%
Lightness20.78%
Dominant channelBlue
Hex per channelR 00 · G 35 · B 6A

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Every value on this page was computed from “00356a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.