Nerdulator> put something in

Recognised as Colour

#283DAC

  • #283DAC
  • Blue
  • Dark
  • Nearest: Slate blue

#283DAC is a blue with RGB values 40, 61, 172 and HSL 230°, 62%, 42%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#283DAC#283DAC
HEX#283DAC
RGBrgb(40, 61, 172)
RGB (0–1)0.1569, 0.2392, 0.6745
RGB percentages15.7%, 23.9%, 67.5%
HSLhsl(230.5, 62.3%, 41.6%)
HSV / HSBhsv(230.5, 76.7%, 67.5%)
CMYK76.7%, 64.5%, 0%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,637,228
CSS custom property--colour: #283DAC;

Brightness & contrast

Relative luminance0.06767WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.92:1
Contrast with white8.92:1WCAG normal text: AAA
Contrast with black2.35:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#D7C253

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0050B0no red cones; affects about 1% of men; ΔE 15.3 from the original
Deuteranopia#0043AAno green cones; the most common form, about 1% of men; ΔE 7.6 from the original
Tritanopia#005A6Fno blue cones; rare, and affects men and women equally; ΔE 63.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.92:1WCAG large text: AAA
Contrast with black, large text2.35:1WCAG large text: Fail

Named colours

Slate blue · ΔE 15.1Rebecca purple · ΔE 18Royal blue · ΔE 18Midnight blue · ΔE 19.5Dark slateblue · ΔE 20.4Medium slateblue · ΔE 23
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 15.05, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AC9728
Analogous#287FAC, #5528AC
Triadic#AC283D, #3DAC28
Split complementary#AC5528, #7FAC28
Tetradic#AC287F, #AC9728, #28AC55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B3BCED
Lighter +30%#8998E4
Lighter +20%#6073DA
Lighter +10%#374FD0
Darker −10%#1E2E83
Darker −20%#152059
Darker −30%#0B1130
Darker −40%#020206
More saturated +25%#0D2BC7
Less saturated −25%#434F92

Channel breakdown

R40
G61
B172
Red40 (15.7%)
Green61 (23.9%)
Blue172 (67.5%)
Hue230.45°
Saturation (HSL)62.26%
Lightness41.57%
Dominant channelBlue
Hex per channelR 28 · G 3D · B AC

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 “283dac” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.