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Recognised as Colour

#21145D

  • #21145D
  • Blue
  • Dark
  • Nearest: Midnight blue

#21145D is a blue with RGB values 33, 20, 93 and HSL 251°, 65%, 22%. It is a dark colour, so white text on it reaches 15.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#21145D#21145D
HEX#21145D
RGBrgb(33, 20, 93)
RGB (0–1)0.1294, 0.0784, 0.3647
RGB percentages12.9%, 7.8%, 36.5%
HSLhsl(250.7, 64.6%, 22.2%)
HSV / HSBhsv(250.7, 78.5%, 36.5%)
CMYK64.5%, 78.5%, 0%, 63.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,167,901
CSS custom property--colour: #21145D;

Brightness & contrast

Relative luminance0.01614WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.88:1
Contrast with white15.88:1WCAG normal text: AAA
Contrast with black1.32:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#DEEBA2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00255Fno red cones; affects about 1% of men; ΔE 15.6 from the original
Deuteranopia#00205Cno green cones; the most common form, about 1% of men; ΔE 12.8 from the original
Tritanopia#002837no blue cones; rare, and affects men and women equally; ΔE 45.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.88:1WCAG large text: AAA
Contrast with black, large text1.32:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9.1Dark slateblue · ΔE 17.8Rebecca purple · ΔE 24.7Indigo · ΔE 26.7Navy · ΔE 29.9Purple · ΔE 34.5
Nearest named CSS colourMidnight blue (#191970)ΔE 9.14, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#505D14
Analogous#142B5D, #46145D
Triadic#5D2114, #145D21
Split complementary#5D4614, #2B5D14
Tetradic#5D142B, #505D14, #145D46

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7660DD
Lighter +30%#5236D4
Lighter +20%#3F26B1
Lighter +10%#301D87
Darker −10%#120B33
Darker −20%#030209
Darker −30%#000000
Darker −40%#000000
More saturated +25%#18066B
Less saturated −25%#2A224F

Channel breakdown

R33
G20
B93
Red33 (12.9%)
Green20 (7.8%)
Blue93 (36.5%)
Hue250.68°
Saturation (HSL)64.6%
Lightness22.16%
Dominant channelBlue
Hex per channelR 21 · G 14 · B 5D

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Every value on this page was computed from “21145d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.