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Recognised as Colour

#015C8B

  • #015C8B
  • Blue
  • Dark
  • Nearest: Steel blue

#015C8B is a blue with RGB values 1, 92, 139 and HSL 200°, 99%, 27%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#015C8B#015C8B
HEX#015C8B
RGBrgb(1, 92, 139)
RGB (0–1)0.0039, 0.3608, 0.5451
RGB percentages0.4%, 36.1%, 54.5%
HSLhsl(200.4, 98.6%, 27.5%)
HSV / HSBhsv(200.4, 99.3%, 54.5%)
CMYK99.3%, 33.8%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer89,227
CSS custom property--colour: #015C8B;

Brightness & contrast

Relative luminance0.09525WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.23:1
Contrast with white7.23:1WCAG normal text: AAA
Contrast with black2.9:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#FEA374

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#455D8Dno red cones; affects about 1% of men; ΔE 10.8 from the original
Deuteranopia#33528Ano green cones; the most common form, about 1% of men; ΔE 12.3 from the original
Tritanopia#00686Dno blue cones; rare, and affects men and women equally; ΔE 29.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.23:1WCAG large text: AAA
Contrast with black, large text2.9:1WCAG large text: Fail

Named colours

Steel blue · ΔE 15.5Slate grey · ΔE 27.1Light slate grey · ΔE 28.6Dark slate grey · ΔE 30.1Dark slateblue · ΔE 32.9Cornflower blue · ΔE 33.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 15.51, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8B3001
Analogous#018B75, #01178B
Triadic#8B015C, #5C8B01
Split complementary#8B0117, #8B7501
Tetradic#75018B, #8B3001, #178B01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5AC6FE
Lighter +30%#28B5FD
Lighter +20%#029FF0
Lighter +10%#017EBE
Darker −10%#013A58
Darker −20%#001926
Darker −30%#000000
Darker −40%#000000
More saturated +25%#005C8C
Less saturated −25%#12567A

Channel breakdown

R1
G92
B139
Red1 (0.4%)
Green92 (36.1%)
Blue139 (54.5%)
Hue200.43°
Saturation (HSL)98.57%
Lightness27.45%
Dominant channelBlue
Hex per channelR 01 · G 5C · B 8B

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Every value on this page was computed from “015c8b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.