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Recognised as Colour

#1804DA

  • #1804DA
  • Blue
  • Dark
  • Nearest: Medium blue

#1804DA is a blue with RGB values 24, 4, 218 and HSL 246°, 96%, 44%. It is a dark colour, so white text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1804DA#1804DA
HEX#1804DA
RGBrgb(24, 4, 218)
RGB (0–1)0.0941, 0.0157, 0.8549
RGB percentages9.4%, 1.6%, 85.5%
HSLhsl(245.6, 96.4%, 43.5%)
HSV / HSBhsv(245.6, 98.2%, 85.5%)
CMYK89%, 98.2%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,574,106
CSS custom property--colour: #1804DA;

Brightness & contrast

Relative luminance0.05343WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.15:1
Contrast with white10.15:1WCAG normal text: AAA
Contrast with black2.07:1WCAG normal text: Fail
Greyscale equivalent#181818
Inverted#E7FB25

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004CDFno red cones; affects about 1% of men; ΔE 35.6 from the original
Deuteranopia#0036D7no green cones; the most common form, about 1% of men; ΔE 22.9 from the original
Tritanopia#005B7Fno blue cones; rare, and affects men and women equally; ΔE 104.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.15:1WCAG large text: AAA
Contrast with black, large text2.07:1WCAG large text: Fail

Named colours

Medium blue · ΔE 4.8Blue · ΔE 17Blue violet · ΔE 24.5Dark violet · ΔE 27.7Dark blue · ΔE 34.8Dark orchid · ΔE 38.1
Nearest named CSS colourMedium blue (#0000CD)ΔE 4.81, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C6DA04
Analogous#045BDA, #8304DA
Triadic#DA1804, #04DA18
Split complementary#DA8304, #5BDA04
Tetradic#DA045B, #C6DA04, #04DA83

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B4ADFD
Lighter +30%#877AFD
Lighter +20%#5948FC
Lighter +10%#2C16FB
Darker −10%#1203A8
Darker −20%#0D0276
Darker −30%#070144
Darker −40%#020012
More saturated +25%#1500DE
Less saturated −25%#2F20BE

Channel breakdown

R24
G4
B218
Red24 (9.4%)
Green4 (1.6%)
Blue218 (85.5%)
Hue245.61°
Saturation (HSL)96.4%
Lightness43.53%
Dominant channelBlue
Hex per channelR 18 · G 04 · B DA

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Every value on this page was computed from “1804da” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.