Colour

#215FDF

#215FDF
Blue
Dark
Nearest: Royal blue

#215FDF is a blue with RGB values 33, 95, 223 and HSL 220°, 75%, 50%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#215FDF#215FDF

HEX#215FDF

RGBrgb(33, 95, 223)

RGB (0–1)0.1294, 0.3725, 0.8745

RGB percentages12.9%, 37.3%, 87.5%

HSLhsl(220.4, 74.8%, 50.2%)

HSV / HSBhsv(220.4, 85.2%, 87.5%)

CMYK85.2%, 57.4%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,187,231

CSS custom property--colour: #215FDF;

Brightness & contrast

Relative luminance0.13835WCAG 2.x, 0 is black and 1 is white

Perceived brightness106.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.57:1

Contrast with white5.57:1WCAG normal text: AA

Contrast with black3.77:1WCAG normal text: Fail

Greyscale equivalent#5B5B5B

Inverted#DEA020

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0071E3no red cones; affects about 1% of men; ΔE 13.4 from the original

Deuteranopia#0060DDno green cones; the most common form, about 1% of men; ΔE 2.8 from the original

Tritanopia#008096no blue cones; rare, and affects men and women equally; ΔE 71.1 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text5.57:1WCAG large text: AAA

Contrast with black, large text3.77:1WCAG large text: AA

Named colours

Royal blue · ΔE 6.9 Slate blue · ΔE 14.7 Medium slateblue · ΔE 15.6 Medium purple · ΔE 24.5 Dodgerblue · ΔE 25.3 Rebecca purple · ΔE 29.4

Nearest named CSS colourRoyal blue (#4169E1)ΔE 6.88, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#DFA121

Analogous#21BEDF, #4221DF

Triadic#DF215F, #5FDF21

Split complementary#DF4221, #BEDF21

Tetradic#DF21BE, #DFA121, #21DF42

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#D3E0F9

Lighter +30%#A7BFF2

Lighter +20%#7A9FEC

Lighter +10%#4E7FE5

Darker −10%#1A4CB3

Darker −20%#133987

Darker −30%#0D265A

Darker −40%#07132D

More saturated +25%#0154FF

Less saturated −25%#416ABF

Channel breakdown

R33

G95

B223

Red33 (12.9%)

Green95 (37.3%)

Blue223 (87.5%)

Hue220.42°

Saturation (HSL)74.8%

Lightness50.2%

Dominant channelBlue

Hex per channelR 21 · G 5F · B DF

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#215FDF

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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