Nerdulator> put something in

Colour

#285BB5

  • #285BB5
  • Blue
  • Dark
  • Nearest: Dark slateblue

#285BB5 is a blue with RGB values 40, 91, 181 and HSL 218°, 64%, 43%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#285BB5#285BB5
HEX#285BB5
RGBrgb(40, 91, 181)
RGB (0–1)0.1569, 0.3569, 0.7098
RGB percentages15.7%, 35.7%, 71%
HSLhsl(218.3, 63.8%, 43.3%)
HSV / HSBhsv(218.3, 77.9%, 71%)
CMYK77.9%, 49.7%, 0%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,644,917
CSS custom property--colour: #285BB5;

Brightness & contrast

Relative luminance0.11269WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.45:1
Contrast with white6.45:1WCAG normal text: AA
Contrast with black3.25:1WCAG normal text: Fail
Greyscale equivalent#575757
Inverted#D7A44A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2565B8no red cones; affects about 1% of men; ΔE 7.1 from the original
Deuteranopia#0058B3no green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#00717Fno blue cones; rare, and affects men and women equally; ΔE 52.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.45:1WCAG large text: AAA
Contrast with black, large text3.25:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 17.3Royal blue · ΔE 18.2Slate blue · ΔE 21.5Dodgerblue · ΔE 22.9Cornflower blue · ΔE 23.1Medium purple · ΔE 25.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.32, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B58228
Analogous#28A1B5, #3C28B5
Triadic#B5285B, #5BB528
Split complementary#B53C28, #A1B528
Tetradic#B528A1, #B58228, #28B53C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B9CDF0
Lighter +30%#90AFE6
Lighter +20%#6691DD
Lighter +10%#3C73D4
Darker −10%#1F468B
Darker −20%#163161
Darker −30%#0C1C38
Darker −40%#03070E
More saturated +25%#0C53D1
Less saturated −25%#446399

Channel breakdown

R40
G91
B181
Red40 (15.7%)
Green91 (35.7%)
Blue181 (71%)
Hue218.3°
Saturation (HSL)63.8%
Lightness43.33%
Dominant channelBlue
Hex per channelR 28 · G 5B · B B5

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “285bb5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.