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Recognised as Colour

#0187DC

  • #0187DC
  • Blue
  • Dark
  • Nearest: Cornflower blue

#0187DC is a blue with RGB values 1, 135, 220 and HSL 203°, 99%, 43%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#0187DC#0187DC
HEX#0187DC
RGBrgb(1, 135, 220)
RGB (0–1)0.0039, 0.5294, 0.8627
RGB percentages0.4%, 52.9%, 86.3%
HSLhsl(203.3, 99.1%, 43.3%)
HSV / HSBhsv(203.3, 99.5%, 86.3%)
CMYK99.5%, 38.6%, 0%, 13.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer100,316
CSS custom property--colour: #0187DC;

Brightness & contrast

Relative luminance0.22502WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.5:1
Contrast with white3.82:1WCAG normal text: Fail
Contrast with black5.5:1WCAG normal text: AA
Greyscale equivalent#717171
Inverted#FE7823

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5D8CDFno red cones; affects about 1% of men; ΔE 9.8 from the original
Deuteranopia#3C7BDAno green cones; the most common form, about 1% of men; ΔE 11.5 from the original
Tritanopia#009CA7no blue cones; rare, and affects men and women equally; ΔE 47.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.82:1WCAG large text: AA
Contrast with black, large text5.5:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 11.4Dodgerblue · ΔE 15.5Steel blue · ΔE 20.3Deep skyblue · ΔE 27.5Royal blue · ΔE 29.5Dark slateblue · ΔE 35.8
Nearest named CSS colourCornflower blue (#6495ED)ΔE 11.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DC5601
Analogous#01DCC4, #0119DC
Triadic#DC0187, #87DC01
Split complementary#DC011A, #DCC401
Tetradic#C301DC, #DC5601, #19DC01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AADEFF
Lighter +30%#78CAFE
Lighter +20%#45B6FE
Lighter +10%#12A2FE
Darker −10%#0168A9
Darker −20%#014976
Darker −30%#002A44
Darker −40%#000A11
More saturated +25%#0087DD
Less saturated −25%#1D81C0

Channel breakdown

R1
G135
B220
Red1 (0.4%)
Green135 (52.9%)
Blue220 (86.3%)
Hue203.29°
Saturation (HSL)99.1%
Lightness43.33%
Dominant channelBlue
Hex per channelR 01 · G 87 · B DC

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Every value on this page was computed from “0187dc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.