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Recognised as Colour

#021F53

  • #021F53
  • Blue
  • Dark
  • Nearest: Dark slateblue

#021F53 is a blue with RGB values 2, 31, 83 and HSL 219°, 95%, 17%. It is a dark colour, so white text on it reaches 15.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#021F53#021F53
HEX#021F53
RGBrgb(2, 31, 83)
RGB (0–1)0.0078, 0.1216, 0.3255
RGB percentages0.8%, 12.2%, 32.5%
HSLhsl(218.5, 95.3%, 16.7%)
HSV / HSBhsv(218.5, 97.6%, 32.5%)
CMYK97.6%, 62.7%, 0%, 67.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer139,091
CSS custom property--colour: #021F53;

Brightness & contrast

Relative luminance0.01617WCAG 2.x, 0 is black and 1 is white
Perceived brightness36.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.87:1
Contrast with white15.87:1WCAG normal text: AAA
Contrast with black1.32:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#FDE0AC

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002655no red cones; affects about 1% of men; ΔE 5.8 from the original
Deuteranopia#001F52no green cones; the most common form, about 1% of men; ΔE 0.8 from the original
Tritanopia#002C35no blue cones; rare, and affects men and women equally; ΔE 34.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.87:1WCAG large text: AAA
Contrast with black, large text1.32:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22.9Midnight blue · ΔE 23.9Rebecca purple · ΔE 37.6Black · ΔE 39.3Steel blue · ΔE 42.9Indigo · ΔE 43.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.92, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#533602
Analogous#024853, #0D0253
Triadic#53021F, #1F5302
Split complementary#530E02, #475302
Tetradic#530248, #533602, #02530E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2773FA
Lighter +30%#0657E8
Lighter +20%#0444B7
Lighter +10%#033285
Darker −10%#010C21
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001E55
Less saturated −25%#0D2248

Channel breakdown

R2
G31
B83
Red2 (0.8%)
Green31 (12.2%)
Blue83 (32.5%)
Hue218.52°
Saturation (HSL)95.29%
Lightness16.67%
Dominant channelBlue
Hex per channelR 02 · G 1F · B 53

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Every value on this page was computed from “021f53” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.