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Recognised as Colour

#091521

  • #091521
  • Blue
  • Dark
  • Nearest: Black

#091521 is a blue with RGB values 9, 21, 33 and HSL 210°, 57%, 8%. It is a dark colour, so white text on it reaches 18.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#091521#091521
HEX#091521
RGBrgb(9, 21, 33)
RGB (0–1)0.0353, 0.0824, 0.1294
RGB percentages3.5%, 8.2%, 12.9%
HSLhsl(210, 57.1%, 8.2%)
HSV / HSBhsv(210, 72.7%, 12.9%)
CMYK72.7%, 36.4%, 0%, 87.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer595,233
CSS custom property--colour: #091521;

Brightness & contrast

Relative luminance0.00704WCAG 2.x, 0 is black and 1 is white
Perceived brightness20.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.41:1
Contrast with white18.41:1WCAG normal text: AAA
Contrast with black1.14:1WCAG normal text: Fail
Greyscale equivalent#131313
Inverted#F6EADE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#101522no red cones; affects about 1% of men; ΔE 2.5 from the original
Deuteranopia#0D1321no green cones; the most common form, about 1% of men; ΔE 2.5 from the original
Tritanopia#001819no blue cones; rare, and affects men and women equally; ΔE 9.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.41:1WCAG large text: AAA
Contrast with black, large text1.14:1WCAG large text: Fail

Named colours

Black · ΔE 11.7Dark slate grey · ΔE 27.9Dim grey · ΔE 39.3Slate grey · ΔE 46.5Gray · ΔE 48.2Dark slateblue · ΔE 48.5
Nearest named CSS colourBlack (#000000)ΔE 11.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#211509
Analogous#092121, #090921
Triadic#210915, #152109
Split complementary#210909, #212109
Tetradic#210921, #211509, #092109

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#357BC1
Lighter +30%#2A6299
Lighter +20%#1F4871
Lighter +10%#142F49
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#041526
Less saturated −25%#0E151C

Channel breakdown

R9
G21
B33
Red9 (3.5%)
Green21 (8.2%)
Blue33 (12.9%)
Hue210°
Saturation (HSL)57.14%
Lightness8.24%
Dominant channelBlue
Hex per channelR 09 · G 15 · B 21

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Every value on this page was computed from “hex 091521” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.