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Colour

#001F6B

  • #001F6B
  • Blue
  • Dark
  • Nearest: Midnight blue

#001F6B is a blue with RGB values 0, 31, 107 and HSL 223°, 100%, 21%. It is a dark colour, so white text on it reaches 14.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001F6B#001F6B
HEX#001F6B
RGBrgb(0, 31, 107)
RGB (0–1)0, 0.1216, 0.4196
RGB percentages0%, 12.2%, 42%
HSLhsl(222.6, 100%, 21%)
HSV / HSBhsv(222.6, 100%, 42%)
CMYK100%, 71%, 0%, 58%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,043
CSS custom property--colour: #001F6B;

Brightness & contrast

Relative luminance0.02042WCAG 2.x, 0 is black and 1 is white
Perceived brightness43.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.91:1
Contrast with white14.91:1WCAG normal text: AAA
Contrast with black1.41:1WCAG normal text: Fail
Greyscale equivalent#1E1E1E
Inverted#FFE094

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002C6Dno red cones; affects about 1% of men; ΔE 10.9 from the original
Deuteranopia#00226Ano green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#003442no blue cones; rare, and affects men and women equally; ΔE 47.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text14.91:1WCAG large text: AAA
Contrast with black, large text1.41:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 8.4Dark slateblue · ΔE 15.9Rebecca purple · ΔE 25.7Indigo · ΔE 29Navy · ΔE 29.9Slate blue · ΔE 33.9
Nearest named CSS colourMidnight blue (#191970)ΔE 8.41, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6B4C00
Analogous#00556B, #16006B
Triadic#6B001F, #1F6B00
Split complementary#6B1600, #556B00
Tetradic#6B0055, #6B4C00, #006B16

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3872FF
Lighter +30%#054DFF
Lighter +20%#003DD1
Lighter +10%#002E9E
Darker −10%#001038
Darker −20%#000105
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001F6B
Less saturated −25%#0D255E

Channel breakdown

R0
G31
B107
Red0 (0%)
Green31 (12.2%)
Blue107 (42%)
Hue222.62°
Saturation (HSL)100%
Lightness20.98%
Dominant channelBlue
Hex per channelR 00 · G 1F · B 6B

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Every value on this page was computed from “001f6b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.