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Recognised as Colour

#213A76

  • #213A76
  • Blue
  • Dark
  • Nearest: Dark slateblue

#213A76 is a blue with RGB values 33, 58, 118 and HSL 222°, 56%, 30%. 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 slateblue.

Colour values

#213A76#213A76
HEX#213A76
RGBrgb(33, 58, 118)
RGB (0–1)0.1294, 0.2275, 0.4627
RGB percentages12.9%, 22.7%, 46.3%
HSLhsl(222.4, 56.3%, 29.6%)
HSV / HSBhsv(222.4, 72%, 46.3%)
CMYK72%, 50.8%, 0%, 53.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,177,654
CSS custom property--colour: #213A76;

Brightness & contrast

Relative luminance0.04657WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.87:1
Contrast with white10.87:1WCAG normal text: AAA
Contrast with black1.93:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#DEC589

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#194178no red cones; affects about 1% of men; ΔE 5.9 from the original
Deuteranopia#023975no green cones; the most common form, about 1% of men; ΔE 3.7 from the original
Tritanopia#004852no blue cones; rare, and affects men and women equally; ΔE 38.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.87:1WCAG large text: AAA
Contrast with black, large text1.93:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.3Midnight blue · ΔE 24.9Steel blue · ΔE 31.8Rebecca purple · ΔE 32.8Slate blue · ΔE 36.9Royal blue · ΔE 38.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.3, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#765D21
Analogous#216576, #332176
Triadic#76213A, #3A7621
Split complementary#763321, #647621
Tetradic#762165, #765D21, #217633

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#86A0DD
Lighter +30%#5E80D2
Lighter +20%#3761C6
Lighter +10%#2C4E9E
Darker −10%#16264E
Darker −20%#0B1326
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0E3289
Less saturated −25%#344263

Channel breakdown

R33
G58
B118
Red33 (12.9%)
Green58 (22.7%)
Blue118 (46.3%)
Hue222.35°
Saturation (HSL)56.29%
Lightness29.61%
Dominant channelBlue
Hex per channelR 21 · G 3A · B 76

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Every value on this page was computed from “213a76” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.