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Colour

#213B97

  • #213B97
  • Blue
  • Dark
  • Nearest: Dark slateblue

#213B97 is a blue with RGB values 33, 59, 151 and HSL 227°, 64%, 36%. It is a dark colour, so white text on it reaches 9.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#213B97#213B97
HEX#213B97
RGBrgb(33, 59, 151)
RGB (0–1)0.1294, 0.2314, 0.5922
RGB percentages12.9%, 23.1%, 59.2%
HSLhsl(226.8, 64.1%, 36.1%)
HSV / HSBhsv(226.8, 78.1%, 59.2%)
CMYK78.1%, 60.9%, 0%, 40.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,177,943
CSS custom property--colour: #213B97;

Brightness & contrast

Relative luminance0.05686WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.83:1
Contrast with white9.83:1WCAG normal text: AAA
Contrast with black2.14:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#DEC468

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00499Ano red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#003E95no green cones; the most common form, about 1% of men; ΔE 5.3 from the original
Tritanopia#005263no blue cones; rare, and affects men and women equally; ΔE 54.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.83:1WCAG large text: AAA
Contrast with black, large text2.14:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.4Midnight blue · ΔE 14.9Rebecca purple · ΔE 19.5Slate blue · ΔE 20.7Royal blue · ΔE 22.8Indigo · ΔE 28.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#977D21
Analogous#217697, #422197
Triadic#97213B, #3B9721
Split complementary#974221, #769721
Tetradic#972176, #977D21, #219742

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9BACE9
Lighter +30%#7189E0
Lighter +20%#4767D7
Lighter +10%#2A4BC1
Darker −10%#182B6D
Darker −20%#0F1A43
Darker −30%#060A19
Darker −40%#000000
More saturated +25%#0A2EAE
Less saturated −25%#384880

Channel breakdown

R33
G59
B151
Red33 (12.9%)
Green59 (23.1%)
Blue151 (59.2%)
Hue226.78°
Saturation (HSL)64.13%
Lightness36.08%
Dominant channelBlue
Hex per channelR 21 · G 3B · B 97

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Every value on this page was computed from “213b97” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.