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Recognised as Colour

#2197FD

  • #2197FD
  • Blue
  • Dark
  • Nearest: Dodgerblue

#2197FD is a blue with RGB values 33, 151, 253 and HSL 208°, 98%, 56%. It is a dark colour, so black text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#2197FD#2197FD
HEX#2197FD
RGBrgb(33, 151, 253)
RGB (0–1)0.1294, 0.5922, 0.9922
RGB percentages12.9%, 59.2%, 99.2%
HSLhsl(207.8, 98.2%, 56.1%)
HSV / HSBhsv(207.8, 87%, 99.2%)
CMYK87%, 40.3%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,201,597
CSS custom property--colour: #2197FD;

Brightness & contrast

Relative luminance0.29548WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.91:1
Contrast with white3.04:1WCAG normal text: Fail
Contrast with black6.91:1WCAG normal text: AA
Greyscale equivalent#858585
Inverted#DE6802

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#649EFFno red cones; affects about 1% of men; ΔE 8.2 from the original
Deuteranopia#3E8BFBno green cones; the most common form, about 1% of men; ΔE 10 from the original
Tritanopia#00B0BEno blue cones; rare, and affects men and women equally; ΔE 55.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.04:1WCAG large text: AA
Contrast with black, large text6.91:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 6.6Cornflower blue · ΔE 10.8Royal blue · ΔE 25.7Steel blue · ΔE 29.9Deep skyblue · ΔE 30.5Medium purple · ΔE 33.5
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 6.56, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FD8721
Analogous#21FDF5, #2129FD
Triadic#FD2197, #97FD21
Split complementary#FD2129, #FDF521
Tetradic#F521FD, #FD8721, #29FD21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBF6FF
Lighter +30%#B9DEFE
Lighter +20%#86C6FE
Lighter +10%#54AFFD
Darker −10%#027EE9
Darker −20%#0263B6
Darker −30%#014784
Darker −40%#012C51
More saturated +25%#1F97FF
Less saturated −25%#3D95E1

Channel breakdown

R33
G151
B253
Red33 (12.9%)
Green151 (59.2%)
Blue253 (99.2%)
Hue207.82°
Saturation (HSL)98.21%
Lightness56.08%
Dominant channelBlue
Hex per channelR 21 · G 97 · B FD

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Every value on this page was computed from “2197fd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.