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Colour

#002151

  • #002151
  • Blue
  • Dark
  • Nearest: Dark slateblue

#002151 is a blue with RGB values 0, 33, 81 and HSL 216°, 100%, 16%. It is a dark colour, so white text on it reaches 15.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#002151#002151
HEX#002151
RGBrgb(0, 33, 81)
RGB (0–1)0, 0.1294, 0.3176
RGB percentages0%, 12.9%, 31.8%
HSLhsl(215.6, 100%, 15.9%)
HSV / HSBhsv(215.6, 100%, 31.8%)
CMYK100%, 59.3%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,529
CSS custom property--colour: #002151;

Brightness & contrast

Relative luminance0.01682WCAG 2.x, 0 is black and 1 is white
Perceived brightness37.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.71:1
Contrast with white15.71:1WCAG normal text: AAA
Contrast with black1.34:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#FFDEAE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002753no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#002050no green cones; the most common form, about 1% of men; ΔE 0.5 from the original
Tritanopia#002D35no blue cones; rare, and affects men and women equally; ΔE 31.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.71:1WCAG large text: AAA
Contrast with black, large text1.34:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 25Midnight blue · ΔE 27.2Black · ΔE 36.9Rebecca purple · ΔE 40.3Dark slate grey · ΔE 40.4Steel blue · ΔE 41.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 24.96, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#513000
Analogous#004A51, #070051
Triadic#510021, #215100
Split complementary#510700, #4A5100
Tetradic#51004A, #513000, #005107

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1E7AFF
Lighter +30%#005FEA
Lighter +20%#004BB7
Lighter +10%#003684
Darker −10%#000C1E
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002151
Less saturated −25%#0A2347

Channel breakdown

R0
G33
B81
Red0 (0%)
Green33 (12.9%)
Blue81 (31.8%)
Hue215.56°
Saturation (HSL)100%
Lightness15.88%
Dominant channelBlue
Hex per channelR 00 · G 21 · B 51

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Every value on this page was computed from “hex 002151” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.