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Recognised as Colour

#001F7F

  • #001F7F
  • Blue
  • Dark
  • Nearest: Midnight blue

#001F7F is a blue with RGB values 0, 31, 127 and HSL 225°, 100%, 25%. It is a dark colour, so white text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001F7F#001F7F
HEX#001F7F
RGBrgb(0, 31, 127)
RGB (0–1)0, 0.1216, 0.498
RGB percentages0%, 12.2%, 49.8%
HSLhsl(225.4, 100%, 24.9%)
HSV / HSBhsv(225.4, 100%, 49.8%)
CMYK100%, 75.6%, 0%, 50.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,063
CSS custom property--colour: #001F7F;

Brightness & contrast

Relative luminance0.02512WCAG 2.x, 0 is black and 1 is white
Perceived brightness49 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.98:1
Contrast with white13.98:1WCAG normal text: AAA
Contrast with black1.5:1WCAG normal text: Fail
Greyscale equivalent#1F1F1F
Inverted#FFE080

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003282no red cones; affects about 1% of men; ΔE 14.8 from the original
Deuteranopia#00267Dno green cones; the most common form, about 1% of men; ΔE 6.9 from the original
Tritanopia#003B4Dno blue cones; rare, and affects men and women equally; ΔE 58 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.98:1WCAG large text: AAA
Contrast with black, large text1.5:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 6.5Navy · ΔE 18.6Dark slateblue · ΔE 19.7Indigo · ΔE 20Rebecca purple · ΔE 20.4Dark blue · ΔE 22.7
Nearest named CSS colourMidnight blue (#191970)ΔE 6.53, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F6000
Analogous#005E7F, #21007F
Triadic#7F001F, #1F7F00
Split complementary#7F2100, #5E7F00
Tetradic#7F005E, #7F6000, #007F21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4C78FF
Lighter +30%#1951FF
Lighter +20%#0038E5
Lighter +10%#002BB2
Darker −10%#00134C
Darker −20%#000619
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001F7F
Less saturated −25%#10276F

Channel breakdown

R0
G31
B127
Red0 (0%)
Green31 (12.2%)
Blue127 (49.8%)
Hue225.35°
Saturation (HSL)100%
Lightness24.9%
Dominant channelBlue
Hex per channelR 00 · G 1F · B 7F

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Every value on this page was computed from “001f7f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.