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Recognised as Colour

#1857BC

  • #1857BC
  • Blue
  • Dark
  • Nearest: Royal blue

#1857BC is a blue with RGB values 24, 87, 188 and HSL 217°, 77%, 42%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#1857BC#1857BC
HEX#1857BC
RGBrgb(24, 87, 188)
RGB (0–1)0.0941, 0.3412, 0.7373
RGB percentages9.4%, 34.1%, 73.7%
HSLhsl(217, 77.4%, 41.6%)
HSV / HSBhsv(217, 87.2%, 73.7%)
CMYK87.2%, 53.7%, 0%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,595,324
CSS custom property--colour: #1857BC;

Brightness & contrast

Relative luminance0.10641WCAG 2.x, 0 is black and 1 is white
Perceived brightness93 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.71:1
Contrast with white6.71:1WCAG normal text: AA
Contrast with black3.13:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#E7A843

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0063C0no red cones; affects about 1% of men; ΔE 8.7 from the original
Deuteranopia#0055BAno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#007081no blue cones; rare, and affects men and women equally; ΔE 57.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.71:1WCAG large text: AAA
Contrast with black, large text3.13:1WCAG large text: AA

Named colours

Royal blue · ΔE 12.9Slate blue · ΔE 17.5Dark slateblue · ΔE 19.3Dodgerblue · ΔE 23.2Medium purple · ΔE 24.8Medium slateblue · ΔE 26
Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.95, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BC7D18
Analogous#18A9BC, #2B18BC
Triadic#BC1857, #57BC18
Split complementary#BC2B18, #A9BC18
Tetradic#BC18A9, #BC7D18, #18BC2B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ACC8F4
Lighter +30%#7EAAEF
Lighter +20%#518BE9
Lighter +10%#246DE3
Darker −10%#12428F
Darker −20%#0C2D62
Darker −30%#071834
Darker −40%#010307
More saturated +25%#0051D4
Less saturated −25%#335DA2

Channel breakdown

R24
G87
B188
Red24 (9.4%)
Green87 (34.1%)
Blue188 (73.7%)
Hue216.95°
Saturation (HSL)77.36%
Lightness41.57%
Dominant channelBlue
Hex per channelR 18 · G 57 · B BC

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Every value on this page was computed from “1857bc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.