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Colour

#003A66

  • #003A66
  • Blue
  • Dark
  • Nearest: Dark slateblue

#003A66 is a blue with RGB values 0, 58, 102 and HSL 206°, 100%, 20%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#003A66#003A66
HEX#003A66
RGBrgb(0, 58, 102)
RGB (0–1)0, 0.2275, 0.4
RGB percentages0%, 22.7%, 40%
HSLhsl(205.9, 100%, 20%)
HSV / HSBhsv(205.9, 100%, 40%)
CMYK100%, 43.1%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,950
CSS custom property--colour: #003A66;

Brightness & contrast

Relative luminance0.03985WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.69:1
Contrast with white11.69:1WCAG normal text: AAA
Contrast with black1.8:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#FFC599

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#243D68no red cones; affects about 1% of men; ΔE 4.9 from the original
Deuteranopia#123465no green cones; the most common form, about 1% of men; ΔE 6.1 from the original
Tritanopia#00454Bno blue cones; rare, and affects men and women equally; ΔE 28.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.69:1WCAG large text: AAA
Contrast with black, large text1.8:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27.8Steel blue · ΔE 29.5Dark slate grey · ΔE 31Slate grey · ΔE 35.6Midnight blue · ΔE 36.3Dim grey · ΔE 37
Nearest named CSS colourDark slateblue (#483D8B)ΔE 27.8, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#662C00
Analogous#00665F, #000766
Triadic#66003A, #3A6600
Split complementary#660007, #665F00
Tetradic#5F0066, #662C00, #076600

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#33A7FF
Lighter +30%#0091FF
Lighter +20%#0074CC
Lighter +10%#005799
Darker −10%#001D33
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003A66
Less saturated −25%#0D3859

Channel breakdown

R0
G58
B102
Red0 (0%)
Green58 (22.7%)
Blue102 (40%)
Hue205.88°
Saturation (HSL)100%
Lightness20%
Dominant channelBlue
Hex per channelR 00 · G 3A · B 66

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Every value on this page was computed from “003a66” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.