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Recognised as Colour

#285D97

  • #285D97
  • Blue
  • Dark
  • Nearest: Steel blue

#285D97 is a blue with RGB values 40, 93, 151 and HSL 211°, 58%, 37%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#285D97#285D97
HEX#285D97
RGBrgb(40, 93, 151)
RGB (0–1)0.1569, 0.3647, 0.5922
RGB percentages15.7%, 36.5%, 59.2%
HSLhsl(211.4, 58.1%, 37.5%)
HSV / HSBhsv(211.4, 73.5%, 59.2%)
CMYK73.5%, 38.4%, 0%, 40.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,645,399
CSS custom property--colour: #285D97;

Brightness & contrast

Relative luminance0.10514WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.77:1
Contrast with white6.77:1WCAG normal text: AA
Contrast with black3.1:1WCAG normal text: Fail
Greyscale equivalent#565656
Inverted#D7A268

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#426199no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#325796no green cones; the most common form, about 1% of men; ΔE 5.6 from the original
Tritanopia#006B72no blue cones; rare, and affects men and women equally; ΔE 36.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.77:1WCAG large text: AAA
Contrast with black, large text3.1:1WCAG large text: AA

Named colours

Steel blue · ΔE 16.1Dark slateblue · ΔE 25Cornflower blue · ΔE 27.1Slate grey · ΔE 30.2Light slate grey · ΔE 31.4Dodgerblue · ΔE 34.3
Nearest named CSS colourSteel blue (#4682B4)ΔE 16.1, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#976228
Analogous#289497, #2B2897
Triadic#97285D, #5D9728
Split complementary#972B28, #949728
Tetradic#972894, #976228, #28972B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4C4E7
Lighter +30%#7CAADC
Lighter +20%#5390D2
Lighter +10%#3376BF
Darker −10%#1D446F
Darker −20%#132B46
Darker −30%#08131E
Darker −40%#000000
More saturated +25%#105CAF
Less saturated −25%#405E7F

Channel breakdown

R40
G93
B151
Red40 (15.7%)
Green93 (36.5%)
Blue151 (59.2%)
Hue211.35°
Saturation (HSL)58.12%
Lightness37.45%
Dominant channelBlue
Hex per channelR 28 · G 5D · B 97

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Every value on this page was computed from “285d97” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.