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Recognised as Colour

#188DCF

  • #188DCF
  • Blue
  • Dark
  • Nearest: Steel blue

#188DCF is a blue with RGB values 24, 141, 207 and HSL 202°, 79%, 45%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#188DCF#188DCF
HEX#188DCF
RGBrgb(24, 141, 207)
RGB (0–1)0.0941, 0.5529, 0.8118
RGB percentages9.4%, 55.3%, 81.2%
HSLhsl(201.6, 79.2%, 45.3%)
HSV / HSBhsv(201.6, 88.4%, 81.2%)
CMYK88.4%, 31.9%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,609,167
CSS custom property--colour: #188DCF;

Brightness & contrast

Relative luminance0.23749WCAG 2.x, 0 is black and 1 is white
Perceived brightness129.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.75:1
Contrast with white3.65:1WCAG normal text: Fail
Contrast with black5.75:1WCAG normal text: AA
Greyscale equivalent#797979
Inverted#E77230

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6D8ED2no red cones; affects about 1% of men; ΔE 14.5 from the original
Deuteranopia#557FCEno green cones; the most common form, about 1% of men; ΔE 16.4 from the original
Tritanopia#009DA5no blue cones; rare, and affects men and women equally; ΔE 37.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.65:1WCAG large text: AA
Contrast with black, large text5.75:1WCAG large text: AAA

Named colours

Steel blue · ΔE 11Cornflower blue · ΔE 18.4Deep skyblue · ΔE 20Dodgerblue · ΔE 27Light skyblue · ΔE 27.9Light slate grey · ΔE 31.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 11, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF5A18
Analogous#18CFB5, #1832CF
Triadic#CF188D, #8DCF18
Split complementary#CF1832, #CFB618
Tetradic#B518CF, #CF5A18, #32CF18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BCE2F7
Lighter +30%#8ECEF2
Lighter +20%#60BAED
Lighter +10%#33A6E7
Darker −10%#136EA1
Darker −20%#0D4F74
Darker −30%#083046
Darker −40%#031018
More saturated +25%#0094E7
Less saturated −25%#3585B2

Channel breakdown

R24
G141
B207
Red24 (9.4%)
Green141 (55.3%)
Blue207 (81.2%)
Hue201.64°
Saturation (HSL)79.22%
Lightness45.29%
Dominant channelBlue
Hex per channelR 18 · G 8D · B CF

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Every value on this page was computed from “188dcf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.