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Recognised as Colour

#33556A

  • #33556A
  • Blue
  • Dark
  • Nearest: Dark slate grey

#33556A is a blue with RGB values 51, 85, 106 and HSL 203°, 35%, 31%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#33556A#33556A
HEX#33556A
RGBrgb(51, 85, 106)
RGB (0–1)0.2, 0.3333, 0.4157
RGB percentages20%, 33.3%, 41.6%
HSLhsl(202.9, 35%, 30.8%)
HSV / HSBhsv(202.9, 51.9%, 41.6%)
CMYK51.9%, 19.8%, 0%, 58.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,364,202
CSS custom property--colour: #33556A;

Brightness & contrast

Relative luminance0.08241WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.93:1
Contrast with white7.93:1WCAG normal text: AAA
Contrast with black2.65:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#CCAA95

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4B546Bno red cones; affects about 1% of men; ΔE 8.5 from the original
Deuteranopia#444F6Ano green cones; the most common form, about 1% of men; ΔE 8.9 from the original
Tritanopia#175A5Cno blue cones; rare, and affects men and women equally; ΔE 16.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.93:1WCAG large text: AAA
Contrast with black, large text2.65:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 13.9Slate grey · ΔE 19.5Dim grey · ΔE 19.6Light slate grey · ΔE 22.3Steel blue · ΔE 24.3Gray · ΔE 25.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 13.88, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6A4833
Analogous#336A63, #333A6A
Triadic#6A3355, #556A33
Split complementary#6A333A, #6A6333
Tetradic#63336A, #6A4833, #3A6A33

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9ABBCF
Lighter +30%#78A3BE
Lighter +20%#568CAD
Lighter +10%#44718C
Darker −10%#223948
Darker −20%#121E25
Darker −30%#010203
Darker −40%#000000
More saturated +25%#1F5A7E
Less saturated −25%#475056

Channel breakdown

R51
G85
B106
Red51 (20%)
Green85 (33.3%)
Blue106 (41.6%)
Hue202.91°
Saturation (HSL)35.03%
Lightness30.78%
Dominant channelBlue
Hex per channelR 33 · G 55 · B 6A

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Every value on this page was computed from “33556a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.