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Recognised as Colour

#2257CA

  • #2257CA
  • Blue
  • Dark
  • Nearest: Royal blue

#2257CA is a blue with RGB values 34, 87, 202 and HSL 221°, 71%, 46%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#2257CA#2257CA
HEX#2257CA
RGBrgb(34, 87, 202)
RGB (0–1)0.1333, 0.3412, 0.7922
RGB percentages13.3%, 34.1%, 79.2%
HSLhsl(221.1, 71.2%, 46.3%)
HSV / HSBhsv(221.1, 83.2%, 79.2%)
CMYK83.2%, 56.9%, 0%, 20.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,250,698
CSS custom property--colour: #2257CA;

Brightness & contrast

Relative luminance0.11421WCAG 2.x, 0 is black and 1 is white
Perceived brightness97.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.39:1
Contrast with white6.39:1WCAG normal text: AA
Contrast with black3.28:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#DDA835

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0067CEno red cones; affects about 1% of men; ΔE 12.2 from the original
Deuteranopia#0058C8no green cones; the most common form, about 1% of men; ΔE 3.2 from the original
Tritanopia#007488no blue cones; rare, and affects men and women equally; ΔE 64.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.39:1WCAG large text: AAA
Contrast with black, large text3.28:1WCAG large text: AA

Named colours

Royal blue · ΔE 7.6Slate blue · ΔE 13.1Medium slateblue · ΔE 19.2Medium purple · ΔE 23.2Dark slateblue · ΔE 24.3Dodgerblue · ΔE 24.9
Nearest named CSS colourRoyal blue (#4169E1)ΔE 7.6, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CA9522
Analogous#22ABCA, #4122CA
Triadic#CA2257, #57CA22
Split complementary#CA4122, #ABCA22
Tetradic#CA22AB, #CA9522, #22CA41

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3D3F5
Lighter +30%#97B3EE
Lighter +20%#6C92E6
Lighter +10%#4072DF
Darker −10%#1B449E
Darker −20%#133173
Darker −30%#0C1F47
Darker −40%#050C1B
More saturated +25%#044CE7
Less saturated −25%#3F62AD

Channel breakdown

R34
G87
B202
Red34 (13.3%)
Green87 (34.1%)
Blue202 (79.2%)
Hue221.07°
Saturation (HSL)71.19%
Lightness46.27%
Dominant channelBlue
Hex per channelR 22 · G 57 · B CA

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Every value on this page was computed from “2257ca” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.