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Recognised as Colour

#021D5C

  • #021D5C
  • Blue
  • Dark
  • Nearest: Midnight blue

#021D5C is a blue with RGB values 2, 29, 92 and HSL 222°, 96%, 18%. It is a dark colour, so white text on it reaches 15.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#021D5C#021D5C
HEX#021D5C
RGBrgb(2, 29, 92)
RGB (0–1)0.0078, 0.1137, 0.3608
RGB percentages0.8%, 11.4%, 36.1%
HSLhsl(222, 95.7%, 18.4%)
HSV / HSBhsv(222, 97.8%, 36.1%)
CMYK97.8%, 68.5%, 0%, 63.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer138,588
CSS custom property--colour: #021D5C;

Brightness & contrast

Relative luminance0.01664WCAG 2.x, 0 is black and 1 is white
Perceived brightness38.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.76:1
Contrast with white15.76:1WCAG normal text: AAA
Contrast with black1.33:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#FDE2A3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00275Eno red cones; affects about 1% of men; ΔE 8.5 from the original
Deuteranopia#001F5Bno green cones; the most common form, about 1% of men; ΔE 2.6 from the original
Tritanopia#002E39no blue cones; rare, and affects men and women equally; ΔE 41 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.76:1WCAG large text: AAA
Contrast with black, large text1.33:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 16Dark slateblue · ΔE 18.7Rebecca purple · ΔE 31.5Indigo · ΔE 36Navy · ΔE 37.7Slate blue · ΔE 40.1
Nearest named CSS colourMidnight blue (#191970)ΔE 16.04, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5C4102
Analogous#024A5C, #14025C
Triadic#5C021D, #1D5C02
Split complementary#5C1402, #4A5C02
Tetradic#5C024A, #5C4102, #025C14

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#306CFA
Lighter +30%#054CF2
Lighter +20%#043CC0
Lighter +10%#032D8E
Darker −10%#010D2A
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001C5E
Less saturated −25%#0E2250

Channel breakdown

R2
G29
B92
Red2 (0.8%)
Green29 (11.4%)
Blue92 (36.1%)
Hue222°
Saturation (HSL)95.74%
Lightness18.43%
Dominant channelBlue
Hex per channelR 02 · G 1D · B 5C

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Every value on this page was computed from “021d5c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.