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Recognised as Colour

#033787

  • #033787
  • Blue
  • Dark
  • Nearest: Dark slateblue

#033787 is a blue with RGB values 3, 55, 135 and HSL 216°, 96%, 27%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#033787#033787
HEX#033787
RGBrgb(3, 55, 135)
RGB (0–1)0.0118, 0.2157, 0.5294
RGB percentages1.2%, 21.6%, 52.9%
HSLhsl(216.4, 95.7%, 27.1%)
HSV / HSBhsv(216.4, 97.8%, 52.9%)
CMYK97.8%, 59.3%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer210,823
CSS custom property--colour: #033787;

Brightness & contrast

Relative luminance0.04501WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.05:1
Contrast with white11.05:1WCAG normal text: AAA
Contrast with black1.9:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#FCC878

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00428Ano red cones; affects about 1% of men; ΔE 8.4 from the original
Deuteranopia#003685no green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#004B59no blue cones; rare, and affects men and women equally; ΔE 48.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.05:1WCAG large text: AAA
Contrast with black, large text1.9:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.4Midnight blue · ΔE 16.1Rebecca purple · ΔE 25.4Slate blue · ΔE 28Royal blue · ΔE 28.9Indigo · ΔE 33.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#875303
Analogous#037987, #110387
Triadic#870337, #378703
Split complementary#871103, #798703
Tetradic#870379, #875303, #038711

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5B9AFB
Lighter +30%#297BFA
Lighter +20%#0560EB
Lighter +10%#044BB9
Darker −10%#022355
Darker −20%#010E23
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00368A
Less saturated −25%#143B76

Channel breakdown

R3
G55
B135
Red3 (1.2%)
Green55 (21.6%)
Blue135 (52.9%)
Hue216.36°
Saturation (HSL)95.65%
Lightness27.06%
Dominant channelBlue
Hex per channelR 03 · G 37 · B 87

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Every value on this page was computed from “hex 033787” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.