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Recognised as Colour

#033AB8

  • #033AB8
  • Blue
  • Dark
  • Nearest: Slate blue

#033AB8 is a blue with RGB values 3, 58, 184 and HSL 222°, 97%, 37%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#033AB8#033AB8
HEX#033AB8
RGBrgb(3, 58, 184)
RGB (0–1)0.0118, 0.2275, 0.7216
RGB percentages1.2%, 22.7%, 72.2%
HSLhsl(221.8, 96.8%, 36.7%)
HSV / HSBhsv(221.8, 98.4%, 72.2%)
CMYK98.4%, 68.5%, 0%, 27.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer211,640
CSS custom property--colour: #033AB8;

Brightness & contrast

Relative luminance0.06506WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.13:1
Contrast with white9.13:1WCAG normal text: AAA
Contrast with black2.3:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#FCC547

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0050BCno red cones; affects about 1% of men; ΔE 16.3 from the original
Deuteranopia#0040B6no green cones; the most common form, about 1% of men; ΔE 5.9 from the original
Tritanopia#005D74no blue cones; rare, and affects men and women equally; ΔE 71.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.13:1WCAG large text: AAA
Contrast with black, large text2.3:1WCAG large text: Fail

Named colours

Slate blue · ΔE 18.9Royal blue · ΔE 20.5Dark blue · ΔE 21.1Navy · ΔE 21.4Medium slateblue · ΔE 22.4Rebecca purple · ΔE 23.5
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 18.92, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B88103
Analogous#0394B8, #2703B8
Triadic#B8033A, #3AB803
Split complementary#B82703, #94B803
Tetradic#B80394, #B88103, #03B827

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8AADFD
Lighter +30%#588AFC
Lighter +20%#2667FB
Lighter +10%#044AEA
Darker −10%#022A86
Darker −20%#011A54
Darker −30%#010B21
Darker −40%#000000
More saturated +25%#0039BB
Less saturated −25%#1A43A1

Channel breakdown

R3
G58
B184
Red3 (1.2%)
Green58 (22.7%)
Blue184 (72.2%)
Hue221.77°
Saturation (HSL)96.79%
Lightness36.67%
Dominant channelBlue
Hex per channelR 03 · G 3A · B B8

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Every value on this page was computed from “033ab8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.