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Recognised as Colour

#001533

  • #001533
  • Blue
  • Dark
  • Nearest: Black

#001533 is a blue with RGB values 0, 21, 51 and HSL 215°, 100%, 10%. It is a dark colour, so white text on it reaches 18.2:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#001533#001533
HEX#001533
RGBrgb(0, 21, 51)
RGB (0–1)0, 0.0824, 0.2
RGB percentages0%, 8.2%, 20%
HSLhsl(215.3, 100%, 10%)
HSV / HSBhsv(215.3, 100%, 20%)
CMYK100%, 58.8%, 0%, 80%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,427
CSS custom property--colour: #001533;

Brightness & contrast

Relative luminance0.00775WCAG 2.x, 0 is black and 1 is white
Perceived brightness23.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.18:1
Contrast with white18.18:1WCAG normal text: AAA
Contrast with black1.16:1WCAG normal text: Fail
Greyscale equivalent#131313
Inverted#FFEACC

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#041834no red cones; affects about 1% of men; ΔE 2.2 from the original
Deuteranopia#001332no green cones; the most common form, about 1% of men; ΔE 1.1 from the original
Tritanopia#001C21no blue cones; rare, and affects men and women equally; ΔE 20.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.18:1WCAG large text: AAA
Contrast with black, large text1.16:1WCAG large text: Fail

Named colours

Black · ΔE 23.9Dark slate grey · ΔE 34.9Dark slateblue · ΔE 37.3Midnight blue · ΔE 39Dim grey · ΔE 43.9Steel blue · ΔE 47.5
Nearest named CSS colourBlack (#000000)ΔE 23.95, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#331E00
Analogous#002F33, #040033
Triadic#330015, #153300
Split complementary#330500, #2E3300
Tetradic#33002F, #331E00, #003305

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#0069FF
Lighter +30%#0054CC
Lighter +20%#003F99
Lighter +10%#002A66
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001533
Less saturated −25%#06162D

Channel breakdown

R0
G21
B51
Red0 (0%)
Green21 (8.2%)
Blue51 (20%)
Hue215.29°
Saturation (HSL)100%
Lightness10%
Dominant channelBlue
Hex per channelR 00 · G 15 · B 33

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Every value on this page was computed from “hex 001533” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.