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Recognised as Colour

#215BDA

  • #215BDA
  • Blue
  • Dark
  • Nearest: Royal blue

#215BDA is a blue with RGB values 33, 91, 218 and HSL 221°, 74%, 49%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#215BDA#215BDA
HEX#215BDA
RGBrgb(33, 91, 218)
RGB (0–1)0.1294, 0.3569, 0.8549
RGB percentages12.9%, 35.7%, 85.5%
HSLhsl(221.2, 73.7%, 49.2%)
HSV / HSBhsv(221.2, 84.9%, 85.5%)
CMYK84.9%, 58.3%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,186,202
CSS custom property--colour: #215BDA;

Brightness & contrast

Relative luminance0.12867WCAG 2.x, 0 is black and 1 is white
Perceived brightness103 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.88:1
Contrast with white5.88:1WCAG normal text: AA
Contrast with black3.57:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#DEA425

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006DDEno red cones; affects about 1% of men; ΔE 13.5 from the original
Deuteranopia#005CD8no green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#007B92no blue cones; rare, and affects men and women equally; ΔE 70.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.88:1WCAG large text: AAA
Contrast with black, large text3.57:1WCAG large text: AA

Named colours

Royal blue · ΔE 7.7Slate blue · ΔE 14.1Medium slateblue · ΔE 15.8Medium purple · ΔE 24.5Dodgerblue · ΔE 26.5Rebecca purple · ΔE 28.2
Nearest named CSS colourRoyal blue (#4169E1)ΔE 7.69, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DAA021
Analogous#21B8DA, #4321DA
Triadic#DA215B, #5BDA21
Split complementary#DA4321, #B8DA21
Tetradic#DA21B8, #DAA021, #21DA43

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CFDCF8
Lighter +30%#A3BBF1
Lighter +20%#779BEA
Lighter +10%#4A7AE4
Darker −10%#1A49AE
Darker −20%#143681
Darker −30%#0D2455
Darker −40%#061129
More saturated +25%#024FF9
Less saturated −25%#4067BB

Channel breakdown

R33
G91
B218
Red33 (12.9%)
Green91 (35.7%)
Blue218 (85.5%)
Hue221.19°
Saturation (HSL)73.71%
Lightness49.22%
Dominant channelBlue
Hex per channelR 21 · G 5B · B DA

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