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Recognised as Colour

#0021BA

  • #0021BA
  • Blue
  • Dark
  • Nearest: Dark blue

#0021BA is a blue with RGB values 0, 33, 186 and HSL 229°, 100%, 36%. It is a dark colour, so white text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#0021BA#0021BA
HEX#0021BA
RGBrgb(0, 33, 186)
RGB (0–1)0, 0.1294, 0.7294
RGB percentages0%, 12.9%, 72.9%
HSLhsl(229.4, 100%, 36.5%)
HSV / HSBhsv(229.4, 100%, 72.9%)
CMYK100%, 82.3%, 0%, 27.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,634
CSS custom property--colour: #0021BA;

Brightness & contrast

Relative luminance0.04633WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.9:1
Contrast with white10.9:1WCAG normal text: AAA
Contrast with black1.93:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#FFDE45

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0046BEno red cones; affects about 1% of men; ΔE 25.4 from the original
Deuteranopia#0033B7no green cones; the most common form, about 1% of men; ΔE 13.6 from the original
Tritanopia#00536Fno blue cones; rare, and affects men and women equally; ΔE 84.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.9:1WCAG large text: AAA
Contrast with black, large text1.93:1WCAG large text: Fail

Named colours

Dark blue · ΔE 15.2Navy · ΔE 19.7Medium blue · ΔE 19.8Blue violet · ΔE 24.9Indigo · ΔE 26.4Dark orchid · ΔE 29.3
Nearest named CSS colourDark blue (#00008B)ΔE 15.17, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BA9900
Analogous#007EBA, #3C00BA
Triadic#BA0021, #21BA00
Split complementary#BA3C00, #7EBA00
Tetradic#BA007E, #BA9900, #00BA3C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#879CFF
Lighter +30%#5472FF
Lighter +20%#2148FF
Lighter +10%#002AED
Darker −10%#001887
Darker −20%#000F54
Darker −30%#000621
Darker −40%#000000
More saturated +25%#0021BA
Less saturated −25%#1730A3

Channel breakdown

R0
G33
B186
Red0 (0%)
Green33 (12.9%)
Blue186 (72.9%)
Hue229.35°
Saturation (HSL)100%
Lightness36.47%
Dominant channelBlue
Hex per channelR 00 · G 21 · B BA

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Every value on this page was computed from “0021ba” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.