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Recognised as Colour

#287FAC

  • #287FAC
  • Blue
  • Dark
  • Nearest: Steel blue

#287FAC is a blue with RGB values 40, 127, 172 and HSL 200°, 62%, 42%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#287FAC#287FAC
HEX#287FAC
RGBrgb(40, 127, 172)
RGB (0–1)0.1569, 0.498, 0.6745
RGB percentages15.7%, 49.8%, 67.5%
HSLhsl(200.5, 62.3%, 41.6%)
HSV / HSBhsv(200.5, 76.7%, 67.5%)
CMYK76.7%, 26.2%, 0%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,654,124
CSS custom property--colour: #287FAC;

Brightness & contrast

Relative luminance0.18608WCAG 2.x, 0 is black and 1 is white
Perceived brightness115.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.72:1
Contrast with white4.45:1WCAG normal text: Fail
Contrast with black4.72:1WCAG normal text: AA
Greyscale equivalent#707070
Inverted#D78053

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#697EAEno red cones; affects about 1% of men; ΔE 15.3 from the original
Deuteranopia#5772ABno green cones; the most common form, about 1% of men; ΔE 16.5 from the original
Tritanopia#008B8Eno blue cones; rare, and affects men and women equally; ΔE 28.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.45:1WCAG large text: AA
Contrast with black, large text4.72:1WCAG large text: AAA

Named colours

Steel blue · ΔE 6.3Slate grey · ΔE 22.1Light slate grey · ΔE 22.2Deep skyblue · ΔE 26.2Cadetblue · ΔE 27.9Cornflower blue · ΔE 28.9
Nearest named CSS colourSteel blue (#4682B4)ΔE 6.33, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AC5528
Analogous#28AC97, #283DAC
Triadic#AC287F, #7FAC28
Split complementary#AC283D, #AC9728
Tetradic#9728AC, #AC5528, #3DAC28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B3D9ED
Lighter +30%#89C5E4
Lighter +20%#60B0DA
Lighter +10%#379CD0
Darker −10%#1E6083
Darker −20%#154259
Darker −30%#0B2330
Darker −40%#020506
More saturated +25%#0D87C7
Less saturated −25%#437792

Channel breakdown

R40
G127
B172
Red40 (15.7%)
Green127 (49.8%)
Blue172 (67.5%)
Hue200.45°
Saturation (HSL)62.26%
Lightness41.57%
Dominant channelBlue
Hex per channelR 28 · G 7F · B AC

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Every value on this page was computed from “287fac” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.