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Recognised as Colour

#215D91

  • #215D91
  • Blue
  • Dark
  • Nearest: Steel blue

#215D91 is a blue with RGB values 33, 93, 145 and HSL 208°, 63%, 35%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#215D91#215D91
HEX#215D91
RGBrgb(33, 93, 145)
RGB (0–1)0.1294, 0.3647, 0.5686
RGB percentages12.9%, 36.5%, 56.9%
HSLhsl(207.9, 62.9%, 34.9%)
HSV / HSBhsv(207.9, 77.2%, 56.9%)
CMYK77.2%, 35.9%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,186,641
CSS custom property--colour: #215D91;

Brightness & contrast

Relative luminance0.10196WCAG 2.x, 0 is black and 1 is white
Perceived brightness88.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.91:1
Contrast with white6.91:1WCAG normal text: AA
Contrast with black3.04:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#DEA26E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#456093no red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#355590no green cones; the most common form, about 1% of men; ΔE 8.5 from the original
Tritanopia#006970no blue cones; rare, and affects men and women equally; ΔE 32 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.91:1WCAG large text: AAA
Contrast with black, large text3.04:1WCAG large text: AA

Named colours

Steel blue · ΔE 14.9Slate grey · ΔE 27.8Dark slateblue · ΔE 28.5Light slate grey · ΔE 29.1Cornflower blue · ΔE 29.8Dark slate grey · ΔE 33.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 14.89, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#915521
Analogous#21918D, #212591
Triadic#91215D, #5D9121
Split complementary#912125, #918D21
Tetradic#8D2191, #915521, #259121

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#97C2E7
Lighter +30%#6DAADE
Lighter +20%#4491D4
Lighter +10%#2A78BB
Darker −10%#184267
Darker −20%#0E283E
Darker −30%#050D14
Darker −40%#000000
More saturated +25%#0B5FA7
Less saturated −25%#375B7B

Channel breakdown

R33
G93
B145
Red33 (12.9%)
Green93 (36.5%)
Blue145 (56.9%)
Hue207.86°
Saturation (HSL)62.92%
Lightness34.9%
Dominant channelBlue
Hex per channelR 21 · G 5D · B 91

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Every value on this page was computed from “215d91” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.