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Recognised as Colour

#001951

  • #001951
  • Blue
  • Dark
  • Nearest: Midnight blue

#001951 is a blue with RGB values 0, 25, 81 and HSL 221°, 100%, 16%. It is a dark colour, so white text on it reaches 16.7:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001951#001951
HEX#001951
RGBrgb(0, 25, 81)
RGB (0–1)0, 0.098, 0.3176
RGB percentages0%, 9.8%, 31.8%
HSLhsl(221.5, 100%, 15.9%)
HSV / HSBhsv(221.5, 100%, 31.8%)
CMYK100%, 69.1%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,481
CSS custom property--colour: #001951;

Brightness & contrast

Relative luminance0.01289WCAG 2.x, 0 is black and 1 is white
Perceived brightness33.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.69:1
Contrast with white16.69:1WCAG normal text: AAA
Contrast with black1.26:1WCAG normal text: Fail
Greyscale equivalent#181818
Inverted#FFE6AE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002253no red cones; affects about 1% of men; ΔE 7.7 from the original
Deuteranopia#001A50no green cones; the most common form, about 1% of men; ΔE 1.6 from the original
Tritanopia#002832no blue cones; rare, and affects men and women equally; ΔE 37.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.69:1WCAG large text: AAA
Contrast with black, large text1.26:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 20.3Dark slateblue · ΔE 22.4Rebecca purple · ΔE 35.5Indigo · ΔE 39.7Navy · ΔE 41.6Black · ΔE 41.9
Nearest named CSS colourMidnight blue (#191970)ΔE 20.26, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#513800
Analogous#004151, #100051
Triadic#510019, #195100
Split complementary#510F00, #425100
Tetradic#510041, #513800, #00510F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1E63FF
Lighter +30%#0048EA
Lighter +20%#0038B7
Lighter +10%#002984
Darker −10%#00091E
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001951
Less saturated −25%#0A1D47

Channel breakdown

R0
G25
B81
Red0 (0%)
Green25 (9.8%)
Blue81 (31.8%)
Hue221.48°
Saturation (HSL)100%
Lightness15.88%
Dominant channelBlue
Hex per channelR 00 · G 19 · B 51

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Every value on this page was computed from “hex 001951” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.