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Recognised as Colour

#1873FB

  • #1873FB
  • Blue
  • Dark
  • Nearest: Royal blue

#1873FB is a blue with RGB values 24, 115, 251 and HSL 216°, 97%, 54%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#1873FB#1873FB
HEX#1873FB
RGBrgb(24, 115, 251)
RGB (0–1)0.0941, 0.451, 0.9843
RGB percentages9.4%, 45.1%, 98.4%
HSLhsl(215.9, 96.6%, 53.9%)
HSV / HSBhsv(215.9, 90.4%, 98.4%)
CMYK90.4%, 54.2%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,602,555
CSS custom property--colour: #1873FB;

Brightness & contrast

Relative luminance0.19421WCAG 2.x, 0 is black and 1 is white
Perceived brightness123 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.88:1
Contrast with white4.3:1WCAG normal text: Fail
Contrast with black4.88:1WCAG normal text: AA
Greyscale equivalent#696969
Inverted#E78C04

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0084FFno red cones; affects about 1% of men; ΔE 12.1 from the original
Deuteranopia#0071F8no green cones; the most common form, about 1% of men; ΔE 1.1 from the original
Tritanopia#0095ACno blue cones; rare, and affects men and women equally; ΔE 73.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.3:1WCAG large text: AA
Contrast with black, large text4.88:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.8Medium slateblue · ΔE 17.5Slate blue · ΔE 20.3Dodgerblue · ΔE 21.2Medium purple · ΔE 26.9Cornflower blue · ΔE 32.1
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.77, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FBA018
Analogous#18E4FB, #2F18FB
Triadic#FB1873, #73FB18
Split complementary#FB2F18, #E4FB18
Tetradic#FB18E4, #FBA018, #18FB2F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E1EDFE
Lighter +30%#AECEFE
Lighter +20%#7CB0FD
Lighter +10%#4A91FC
Darker −10%#045BDC
Darker −20%#0346AA
Darker −30%#023178
Darker −40%#011D46
More saturated +25%#1472FF
Less saturated −25%#3579DE

Channel breakdown

R24
G115
B251
Red24 (9.4%)
Green115 (45.1%)
Blue251 (98.4%)
Hue215.95°
Saturation (HSL)96.6%
Lightness53.92%
Dominant channelBlue
Hex per channelR 18 · G 73 · B FB

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Every value on this page was computed from “1873fb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.