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Colour

#00338F

  • #00338F
  • Blue
  • Dark
  • Nearest: Midnight blue

#00338F is a blue with RGB values 0, 51, 143 and HSL 219°, 100%, 28%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#00338F#00338F
HEX#00338F
RGBrgb(0, 51, 143)
RGB (0–1)0, 0.2, 0.5608
RGB percentages0%, 20%, 56.1%
HSLhsl(218.6, 100%, 28%)
HSV / HSBhsv(218.6, 100%, 56.1%)
CMYK100%, 64.3%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,199
CSS custom property--colour: #00338F;

Brightness & contrast

Relative luminance0.04351WCAG 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 11.23:1
Contrast with white11.23:1WCAG normal text: AAA
Contrast with black1.87:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#FFCC70

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004192no red cones; affects about 1% of men; ΔE 10.8 from the original
Deuteranopia#00358Dno green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#004C5Cno blue cones; rare, and affects men and women equally; ΔE 55.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.23:1WCAG large text: AAA
Contrast with black, large text1.87:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 12.4Dark slateblue · ΔE 13.9Rebecca purple · ΔE 21.2Slate blue · ΔE 23.6Royal blue · ΔE 25.5Indigo · ΔE 27.3
Nearest named CSS colourMidnight blue (#191970)ΔE 12.35, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F5C00
Analogous#007A8F, #14008F
Triadic#8F0033, #338F00
Split complementary#8F1500, #7A8F00
Tetradic#8F007B, #8F5C00, #008F15

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5C96FF
Lighter +30%#2975FF
Lighter +20%#0057F5
Lighter +10%#0045C2
Darker −10%#00215C
Darker −20%#000F29
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00338F
Less saturated −25%#12387D

Channel breakdown

R0
G51
B143
Red0 (0%)
Green51 (20%)
Blue143 (56.1%)
Hue218.6°
Saturation (HSL)100%
Lightness28.04%
Dominant channelBlue
Hex per channelR 00 · G 33 · B 8F

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Every value on this page was computed from “00338f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.