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Recognised as Colour

#021B9B

  • #021B9B
  • Blue
  • Dark
  • Nearest: Dark blue

#021B9B is a blue with RGB values 2, 27, 155 and HSL 230°, 97%, 31%. It is a dark colour, so white text on it reaches 12.9:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#021B9B#021B9B
HEX#021B9B
RGBrgb(2, 27, 155)
RGB (0–1)0.0078, 0.1059, 0.6078
RGB percentages0.8%, 10.6%, 60.8%
HSLhsl(230.2, 97.5%, 30.8%)
HSV / HSBhsv(230.2, 98.7%, 60.8%)
CMYK98.7%, 82.6%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer138,139
CSS custom property--colour: #021B9B;

Brightness & contrast

Relative luminance0.03163WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.86:1
Contrast with white12.86:1WCAG normal text: AAA
Contrast with black1.63:1WCAG normal text: Fail
Greyscale equivalent#1F1F1F
Inverted#FDE464

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00399Eno red cones; affects about 1% of men; ΔE 21.6 from the original
Deuteranopia#002A99no green cones; the most common form, about 1% of men; ΔE 11.7 from the original
Tritanopia#00445Cno blue cones; rare, and affects men and women equally; ΔE 73.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.86:1WCAG large text: AAA
Contrast with black, large text1.63:1WCAG large text: Fail

Named colours

Dark blue · ΔE 8.3Navy · ΔE 9.2Indigo · ΔE 17Midnight blue · ΔE 23.6Rebecca purple · ΔE 24.9Slate blue · ΔE 28.3
Nearest named CSS colourDark blue (#00008B)ΔE 8.33, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9B8202
Analogous#02679B, #36029B
Triadic#9B021B, #1B9B02
Split complementary#9B3602, #679B02
Tetradic#9B0267, #9B8202, #029B36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6C84FD
Lighter +30%#3A59FC
Lighter +20%#072FFC
Lighter +10%#0324CD
Darker −10%#011269
Darker −20%#010936
Darker −30%#000104
Darker −40%#000000
More saturated +25%#001A9D
Less saturated −25%#162887

Channel breakdown

R2
G27
B155
Red2 (0.8%)
Green27 (10.6%)
Blue155 (60.8%)
Hue230.2°
Saturation (HSL)97.45%
Lightness30.78%
Dominant channelBlue
Hex per channelR 02 · G 1B · B 9B

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Every value on this page was computed from “021b9b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.