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Recognised as Colour

#1891FF

  • #1891FF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#1891FF is a blue with RGB values 24, 145, 255 and HSL 209°, 100%, 55%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#1891FF#1891FF
HEX#1891FF
RGBrgb(24, 145, 255)
RGB (0–1)0.0941, 0.5686, 1
RGB percentages9.4%, 56.9%, 100%
HSLhsl(208.6, 100%, 54.7%)
HSV / HSBhsv(208.6, 90.6%, 100%)
CMYK90.6%, 43.1%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,610,239
CSS custom property--colour: #1891FF;

Brightness & contrast

Relative luminance0.27665WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.53:1
Contrast with white3.21:1WCAG normal text: Fail
Contrast with black6.53:1WCAG normal text: AA
Greyscale equivalent#7F7F7F
Inverted#E76E00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#579AFFno red cones; affects about 1% of men; ΔE 7.8 from the original
Deuteranopia#2687FDno green cones; the most common form, about 1% of men; ΔE 7.4 from the original
Tritanopia#00ACBBno blue cones; rare, and affects men and women equally; ΔE 60.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.21:1WCAG large text: AA
Contrast with black, large text6.53:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 1Cornflower blue · ΔE 14Royal blue · ΔE 21Slate blue · ΔE 31Medium purple · ΔE 31Medium slateblue · ΔE 32.9
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 0.98, indistinguishable to the eye
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF8618
Analogous#18FFF9, #181EFF
Triadic#FF1891, #91FF18
Split complementary#FF181E, #FFF918
Tetradic#FA18FF, #FF8618, #1EFF18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4F2FF
Lighter +30%#B1DAFF
Lighter +20%#7EC2FF
Lighter +10%#4BA9FF
Darker −10%#0077E4
Darker −20%#005DB1
Darker −30%#00427E
Darker −40%#00274B
More saturated +25%#1891FF
Less saturated −25%#3590E2

Channel breakdown

R24
G145
B255
Red24 (9.4%)
Green145 (56.9%)
Blue255 (100%)
Hue208.57°
Saturation (HSL)100%
Lightness54.71%
Dominant channelBlue
Hex per channelR 18 · G 91 · B FF

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Every value on this page was computed from “1891ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.