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Colour

#033A71

  • #033A71
  • Blue
  • Dark
  • Nearest: Dark slateblue

#033A71 is a blue with RGB values 3, 58, 113 and HSL 210°, 95%, 23%. It is a dark colour, so white text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#033A71#033A71
HEX#033A71
RGBrgb(3, 58, 113)
RGB (0–1)0.0118, 0.2275, 0.4431
RGB percentages1.2%, 22.7%, 44.3%
HSLhsl(210, 94.8%, 22.7%)
HSV / HSBhsv(210, 97.3%, 44.3%)
CMYK97.3%, 48.7%, 0%, 55.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer211,569
CSS custom property--colour: #033A71;

Brightness & contrast

Relative luminance0.04238WCAG 2.x, 0 is black and 1 is white
Perceived brightness58.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.37:1
Contrast with white11.37:1WCAG normal text: AAA
Contrast with black1.85:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#FCC58E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1B3F73no red cones; affects about 1% of men; ΔE 3.5 from the original
Deuteranopia#003670no green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#004750no blue cones; rare, and affects men and women equally; ΔE 34.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.37:1WCAG large text: AAA
Contrast with black, large text1.85:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 20.9Midnight blue · ΔE 29.4Steel blue · ΔE 30.4Dark slate grey · ΔE 38.1Rebecca purple · ΔE 38.5Slate grey · ΔE 39.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.95, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#713A03
Analogous#037171, #030371
Triadic#71033A, #3A7103
Split complementary#710303, #717103
Tetradic#710371, #713A03, #037103

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#46A0FA
Lighter +30%#1487F9
Lighter +20%#066DD4
Lighter +10%#0454A3
Darker −10%#02213F
Darker −20%#00070E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003A74
Less saturated −25%#123A62

Channel breakdown

R3
G58
B113
Red3 (1.2%)
Green58 (22.7%)
Blue113 (44.3%)
Hue210°
Saturation (HSL)94.83%
Lightness22.75%
Dominant channelBlue
Hex per channelR 03 · G 3A · B 71

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Every value on this page was computed from “033a71” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.