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Colour

#001F87

  • #001F87
  • Blue
  • Dark
  • Nearest: Midnight blue

#001F87 is a blue with RGB values 0, 31, 135 and HSL 226°, 100%, 26%. It is a dark colour, so white text on it reaches 13.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001F87#001F87
HEX#001F87
RGBrgb(0, 31, 135)
RGB (0–1)0, 0.1216, 0.5294
RGB percentages0%, 12.2%, 52.9%
HSLhsl(226.2, 100%, 26.5%)
HSV / HSBhsv(226.2, 100%, 52.9%)
CMYK100%, 77%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,071
CSS custom property--colour: #001F87;

Brightness & contrast

Relative luminance0.02729WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.58:1
Contrast with white13.58:1WCAG normal text: AAA
Contrast with black1.55:1WCAG normal text: Fail
Greyscale equivalent#202020
Inverted#FFE078

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00348Ano red cones; affects about 1% of men; ΔE 16.1 from the original
Deuteranopia#002785no green cones; the most common form, about 1% of men; ΔE 7.5 from the original
Tritanopia#003E51no blue cones; rare, and affects men and women equally; ΔE 62.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.58:1WCAG large text: AAA
Contrast with black, large text1.55:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 10.7Navy · ΔE 14.8Indigo · ΔE 17.7Dark blue · ΔE 18.5Rebecca purple · ΔE 20.1Dark slateblue · ΔE 22.7
Nearest named CSS colourMidnight blue (#191970)ΔE 10.67, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#876800
Analogous#006387, #240087
Triadic#87001F, #1F8700
Split complementary#872500, #638700
Tetradic#870063, #876800, #008725

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#547BFF
Lighter +30%#2154FF
Lighter +20%#0036ED
Lighter +10%#002BBA
Darker −10%#001354
Darker −20%#000821
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001F87
Less saturated −25%#112876

Channel breakdown

R0
G31
B135
Red0 (0%)
Green31 (12.2%)
Blue135 (52.9%)
Hue226.22°
Saturation (HSL)100%
Lightness26.47%
Dominant channelBlue
Hex per channelR 00 · G 1F · B 87

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Every value on this page was computed from “001f87” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.